class int(object):"""int(x=0) -> int or longint(x, base=10) -> int or longConvert a number or string to an integer, or return 0 if no argumentsare given.  If x is floating point, the conversion truncates towards zero.If x is outside the integer range, the function returns a long instead.If x is not a number or if base is given, then x must be a string orUnicode object representing an integer literal in the given base.  Theliteral can be preceded by '+' or '-' and be surrounded by whitespace.The base defaults to 10.  Valid bases are 0 and 2-36.  Base 0 means tointerpret the base from the string as an integer literal.>>> int('0b100', base=0)"""def bit_length(self): """ 返回表示该数字的时占用的最少位数 """"""int.bit_length() -> intNumber of bits necessary to represent self in binary.>>> bin(37)'0b100101'>>> (37).bit_length()"""return 0def conjugate(self, *args, **kwargs): # real signature unknown""" 返回该复数的共轭复数 """""" Returns self, the complex conjugate of any int. """passdef __abs__(self):""" 返回绝对值 """""" x.__abs__() <==> abs(x) """passdef __add__(self, y):""" x.__add__(y) <==> x+y """passdef __and__(self, y):""" x.__and__(y) <==> x&y """passdef __cmp__(self, y): """ 比较两个数大小 """""" x.__cmp__(y) <==> cmp(x,y) """passdef __coerce__(self, y):""" 强制生成一个元组 """ """ x.__coerce__(y) <==> coerce(x, y) """passdef __divmod__(self, y): """ 相除，得到商和余数组成的元组 """ """ x.__divmod__(y) <==> divmod(x, y) """passdef __div__(self, y): """ x.__div__(y) <==> x/y """passdef __float__(self): """ 转换为浮点类型 """ """ x.__float__() <==> float(x) """passdef __floordiv__(self, y): """ x.__floordiv__(y) <==> x//y """passdef __format__(self, *args, **kwargs): # real signature unknownpassdef __getattribute__(self, name): """ x.__getattribute__('name') <==> x.name """passdef __getnewargs__(self, *args, **kwargs): # real signature unknown""" 内部调用 __new__方法或创建对象时传入参数使用 """ passdef __hash__(self): """如果对象object为哈希表类型，返回对象object的哈希值。哈希值为整数。在字典查找中，哈希值用于快速比较字典的键。两个数值如果相等，则哈希值也相等。"""""" x.__hash__() <==> hash(x) """passdef __hex__(self): """ 返回当前数的 十六进制 表示 """ """ x.__hex__() <==> hex(x) """passdef __index__(self): """ 用于切片，数字无意义 """""" x[y:z] <==> x[y.__index__():z.__index__()] """passdef __init__(self, x, base=10): # known special case of int.__init__""" 构造方法，执行 x = 123 或 x = int(10) 时，自动调用，暂时忽略 """ """int(x=0) -> int or longint(x, base=10) -> int or longConvert a number or string to an integer, or return 0 if no argumentsare given.  If x is floating point, the conversion truncates towards zero.If x is outside the integer range, the function returns a long instead.If x is not a number or if base is given, then x must be a string orUnicode object representing an integer literal in the given base.  Theliteral can be preceded by '+' or '-' and be surrounded by whitespace.The base defaults to 10.  Valid bases are 0 and 2-36.  Base 0 means tointerpret the base from the string as an integer literal.>>> int('0b100', base=0)# (copied from class doc)"""passdef __int__(self): """ 转换为整数 """ """ x.__int__() <==> int(x) """passdef __invert__(self): """ x.__invert__() <==> ~x """passdef __long__(self): """ 转换为长整数 """ """ x.__long__() <==> long(x) """passdef __lshift__(self, y): """ x.__lshift__(y) <==> x<<y """passdef __mod__(self, y): """ x.__mod__(y) <==> x%y """passdef __mul__(self, y): """ x.__mul__(y) <==> x*y """passdef __neg__(self): """ x.__neg__() <==> -x """pass@staticmethod # known case of __new__def __new__(S, *more): """ T.__new__(S, ...) -> a new object with type S, a subtype of T """passdef __nonzero__(self): """ x.__nonzero__() <==> x != 0 """passdef __oct__(self): """ 返回改值的 八进制 表示 """ """ x.__oct__() <==> oct(x) """passdef __or__(self, y): """ x.__or__(y) <==> x|y """passdef __pos__(self): """ x.__pos__() <==> +x """passdef __pow__(self, y, z=None): """ 幂，次方 """ """ x.__pow__(y[, z]) <==> pow(x, y[, z]) """passdef __radd__(self, y): """ x.__radd__(y) <==> y+x """passdef __rand__(self, y): """ x.__rand__(y) <==> y&x """passdef __rdivmod__(self, y): """ x.__rdivmod__(y) <==> divmod(y, x) """passdef __rdiv__(self, y): """ x.__rdiv__(y) <==> y/x """passdef __repr__(self): """转化为解释器可读取的形式 """""" x.__repr__() <==> repr(x) """passdef __str__(self): """转换为人阅读的形式，如果没有适于人阅读的解释形式的话，则返回解释器课阅读的形式"""""" x.__str__() <==> str(x) """passdef __rfloordiv__(self, y): """ x.__rfloordiv__(y) <==> y//x """passdef __rlshift__(self, y): """ x.__rlshift__(y) <==> y<<x """passdef __rmod__(self, y): """ x.__rmod__(y) <==> y%x """passdef __rmul__(self, y): """ x.__rmul__(y) <==> y*x """passdef __ror__(self, y): """ x.__ror__(y) <==> y|x """passdef __rpow__(self, x, z=None): """ y.__rpow__(x[, z]) <==> pow(x, y[, z]) """passdef __rrshift__(self, y): """ x.__rrshift__(y) <==> y>>x """passdef __rshift__(self, y): """ x.__rshift__(y) <==> x>>y """passdef __rsub__(self, y): """ x.__rsub__(y) <==> y-x """passdef __rtruediv__(self, y): """ x.__rtruediv__(y) <==> y/x """passdef __rxor__(self, y): """ x.__rxor__(y) <==> y^x """passdef __sub__(self, y): """ x.__sub__(y) <==> x-y """passdef __truediv__(self, y): """ x.__truediv__(y) <==> x/y """passdef __trunc__(self, *args, **kwargs): """ 返回数值被截取为整形的值，在整形中无意义 """passdef __xor__(self, y): """ x.__xor__(y) <==> x^y """passdenominator = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default""" 分母 = 1 """"""the denominator of a rational number in lowest terms"""imag = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default""" 虚数，无意义 """"""the imaginary part of a complex number"""numerator = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default""" 分子 = 数字大小 """"""the numerator of a rational number in lowest terms"""real = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default""" 实属，无意义 """"""the real part of a complex number"""int

class int(object):"""int(x=0) -> integerint(x, base=10) -> integerConvert a number or string to an integer, or return 0 if no argumentsare given.  If x is a number, return x.__int__().  For floating pointnumbers, this truncates towards zero.If x is not a number or if base is given, then x must be a string,bytes, or bytearray instance representing an integer literal in thegiven base.  The literal can be preceded by '+' or '-' and be surroundedby whitespace.  The base defaults to 10.  Valid bases are 0 and 2-36.Base 0 means to interpret the base from the string as an integer literal.>>> int('0b100', base=0)4"""def bit_length(self): # real signature unknown; restored from __doc__""" 返回表示该数字的时占用的最少位数 """"""int.bit_length() -> intNumber of bits necessary to represent self in binary.>>> bin(37)'0b100101'>>> (37).bit_length()6"""return 0def conjugate(self, *args, **kwargs): # real signature unknown""" 返回该复数的共轭复数 """""" Returns self, the complex conjugate of any int. """pass@classmethod # known casedef from_bytes(cls, bytes, byteorder, *args, **kwargs): # real signature unknown; NOTE: unreliably restored from __doc__ """int.from_bytes(bytes, byteorder, *, signed=False) -> intReturn the integer represented by the given array of bytes.The bytes argument must be a bytes-like object (e.g. bytes or bytearray).The byteorder argument determines the byte order used to represent theinteger.  If byteorder is 'big', the most significant byte is at thebeginning of the byte array.  If byteorder is 'little', the mostsignificant byte is at the end of the byte array.  To request the nativebyte order of the host system, use `sys.byteorder' as the byte order value.The signed keyword-only argument indicates whether two's complement isused to represent the integer."""passdef to_bytes(self, length, byteorder, *args, **kwargs): # real signature unknown; NOTE: unreliably restored from __doc__ """int.to_bytes(length, byteorder, *, signed=False) -> bytesReturn an array of bytes representing an integer.The integer is represented using length bytes.  An OverflowError israised if the integer is not representable with the given number ofbytes.The byteorder argument determines the byte order used to represent theinteger.  If byteorder is 'big', the most significant byte is at thebeginning of the byte array.  If byteorder is 'little', the mostsignificant byte is at the end of the byte array.  To request the nativebyte order of the host system, use `sys.byteorder' as the byte order value.The signed keyword-only argument determines whether two's complement isused to represent the integer.  If signed is False and a negative integeris given, an OverflowError is raised."""passdef __abs__(self, *args, **kwargs): # real signature unknown""" abs(self) """passdef __add__(self, *args, **kwargs): # real signature unknown""" Return self+value. """passdef __and__(self, *args, **kwargs): # real signature unknown""" Return self&value. """passdef __bool__(self, *args, **kwargs): # real signature unknown""" self != 0 """passdef __ceil__(self, *args, **kwargs): # real signature unknown"""整数返回自己如果是小数math.ceil(3.1)返回4"""""" Ceiling of an Integral returns itself. """passdef __divmod__(self, *args, **kwargs): # real signature unknown""" 相除，得到商和余数组成的元组 """""" Return divmod(self, value). """passdef __eq__(self, *args, **kwargs): # real signature unknown""" Return self==value. """passdef __float__(self, *args, **kwargs): # real signature unknown""" float(self) """passdef __floordiv__(self, *args, **kwargs): # real signature unknown""" Return self//value. """passdef __floor__(self, *args, **kwargs): # real signature unknown""" Flooring an Integral returns itself. """passdef __format__(self, *args, **kwargs): # real signature unknownpassdef __getattribute__(self, *args, **kwargs): # real signature unknown""" Return getattr(self, name). """passdef __getnewargs__(self, *args, **kwargs): # real signature unknownpassdef __ge__(self, *args, **kwargs): # real signature unknown""" Return self>=value. """passdef __gt__(self, *args, **kwargs): # real signature unknown""" Return self>value. """passdef __hash__(self, *args, **kwargs): # real signature unknown""" Return hash(self). """passdef __index__(self, *args, **kwargs): # real signature unknown""" 用于切片，数字无意义 """""" Return self converted to an integer, if self is suitable for use as an index into a list. """passdef __init__(self, x, base=10): # known special case of int.__init__""" 构造方法，执行 x = 123 或 x = int(10) 时，自动调用，暂时忽略 """"""int(x=0) -> integerint(x, base=10) -> integerConvert a number or string to an integer, or return 0 if no argumentsare given.  If x is a number, return x.__int__().  For floating pointnumbers, this truncates towards zero.If x is not a number or if base is given, then x must be a string,bytes, or bytearray instance representing an integer literal in thegiven base.  The literal can be preceded by '+' or '-' and be surroundedby whitespace.  The base defaults to 10.  Valid bases are 0 and 2-36.Base 0 means to interpret the base from the string as an integer literal.>>> int('0b100', base=0)4# (copied from class doc)"""passdef __int__(self, *args, **kwargs): # real signature unknown""" int(self) """passdef __invert__(self, *args, **kwargs): # real signature unknown""" ~self """passdef __le__(self, *args, **kwargs): # real signature unknown""" Return self<=value. """passdef __lshift__(self, *args, **kwargs): # real signature unknown""" Return self<<value. """passdef __lt__(self, *args, **kwargs): # real signature unknown""" Return self<value. """passdef __mod__(self, *args, **kwargs): # real signature unknown""" Return self%value. """passdef __mul__(self, *args, **kwargs): # real signature unknown""" Return self*value. """passdef __neg__(self, *args, **kwargs): # real signature unknown""" -self """pass@staticmethod # known case of __new__def __new__(*args, **kwargs): # real signature unknown""" Create and return a new object.  See help(type) for accurate signature. """passdef __ne__(self, *args, **kwargs): # real signature unknown""" Return self!=value. """passdef __or__(self, *args, **kwargs): # real signature unknown""" Return self|value. """passdef __pos__(self, *args, **kwargs): # real signature unknown""" +self """passdef __pow__(self, *args, **kwargs): # real signature unknown""" Return pow(self, value, mod). """passdef __radd__(self, *args, **kwargs): # real signature unknown""" Return value+self. """passdef __rand__(self, *args, **kwargs): # real signature unknown""" Return value&self. """passdef __rdivmod__(self, *args, **kwargs): # real signature unknown""" Return divmod(value, self). """passdef __repr__(self, *args, **kwargs): # real signature unknown""" Return repr(self). """passdef __rfloordiv__(self, *args, **kwargs): # real signature unknown""" Return value//self. """passdef __rlshift__(self, *args, **kwargs): # real signature unknown""" Return value<<self. """passdef __rmod__(self, *args, **kwargs): # real signature unknown""" Return value%self. """passdef __rmul__(self, *args, **kwargs): # real signature unknown""" Return value*self. """passdef __ror__(self, *args, **kwargs): # real signature unknown""" Return value|self. """passdef __round__(self, *args, **kwargs): # real signature unknown"""Rounding an Integral returns itself.Rounding with an ndigits argument also returns an integer."""passdef __rpow__(self, *args, **kwargs): # real signature unknown""" Return pow(value, self, mod). """passdef __rrshift__(self, *args, **kwargs): # real signature unknown""" Return value>>self. """passdef __rshift__(self, *args, **kwargs): # real signature unknown""" Return self>>value. """passdef __rsub__(self, *args, **kwargs): # real signature unknown""" Return value-self. """passdef __rtruediv__(self, *args, **kwargs): # real signature unknown""" Return value/self. """passdef __rxor__(self, *args, **kwargs): # real signature unknown""" Return value^self. """passdef __sizeof__(self, *args, **kwargs): # real signature unknown""" Returns size in memory, in bytes """passdef __str__(self, *args, **kwargs): # real signature unknown""" Return str(self). """passdef __sub__(self, *args, **kwargs): # real signature unknown""" Return self-value. """passdef __truediv__(self, *args, **kwargs): # real signature unknown""" Return self/value. """passdef __trunc__(self, *args, **kwargs): # real signature unknown""" Truncating an Integral returns itself. """passdef __xor__(self, *args, **kwargs): # real signature unknown""" Return self^value. """passdenominator = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default"""the denominator of a rational number in lowest terms"""imag = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default"""the imaginary part of a complex number"""numerator = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default"""the numerator of a rational number in lowest terms"""real = property(lambda self: object(), lambda self, v: None, lambda self: None)  # default"""the real part of a complex number"""

python2.7
>>> a=9223372036854775807
>>> a
9223372036854775807
>>> a+=1
>>> a
9223372036854775808Lpython3.5
>>> a=9223372036854775807
>>> a
9223372036854775807
>>> a+=1
>>> a
9223372036854775808

class str(object):"""str(object='') -> strstr(bytes_or_buffer[, encoding[, errors]]) -> strCreate a new string object from the given object. If encoding orerrors is specified, then the object must expose a data bufferthat will be decoded using the given encoding and error handler.Otherwise, returns the result of object.__str__() (if defined)or repr(object).encoding defaults to sys.getdefaultencoding().errors defaults to 'strict'."""def capitalize(self): # real signature unknown; restored from __doc__"""首字母变大写S.capitalize() -> strReturn a capitalized version of S, i.e. make the first characterhave upper case and the rest lower case."""return ""def casefold(self): # real signature unknown; restored from __doc__"""S.casefold() -> strReturn a version of S suitable for caseless comparisons."""return ""def center(self, width, fillchar=None): # real signature unknown; restored from __doc__"""原来字符居中，不够用空格补全S.center(width[, fillchar]) -> strReturn S centered in a string of length width. Padding isdone using the specified fill character (default is a space)"""return ""def count(self, sub, start=None, end=None): # real signature unknown; restored from __doc__"""从一个范围内的统计某str出现次数S.count(sub[, start[, end]]) -> intReturn the number of non-overlapping occurrences of substring sub instring S[start:end].  Optional arguments start and end areinterpreted as in slice notation."""return 0def encode(self, encoding='utf-8', errors='strict'): # real signature unknown; restored from __doc__"""encode(encoding='utf-8',errors='strict')以encoding指定编码格式编码，如果出错默认报一个ValueError，除非errors指定的是ignore或replaceS.encode(encoding='utf-8', errors='strict') -> bytesEncode S using the codec registered for encoding. Default encodingis 'utf-8'. errors may be given to set a different errorhandling scheme. Default is 'strict' meaning that encoding errors raisea UnicodeEncodeError. Other possible values are 'ignore', 'replace' and'xmlcharrefreplace' as well as any other name registered withcodecs.register_error that can handle UnicodeEncodeErrors."""return b""def endswith(self, suffix, start=None, end=None): # real signature unknown; restored from __doc__"""S.endswith(suffix[, start[, end]]) -> boolReturn True if S ends with the specified suffix, False otherwise.With optional start, test S beginning at that position.With optional end, stop comparing S at that position.suffix can also be a tuple of strings to try."""return Falsedef expandtabs(self, tabsize=8): # real signature unknown; restored from __doc__"""将字符串中包含的\t转换成tabsize个空格S.expandtabs(tabsize=8) -> strReturn a copy of S where all tab characters are expanded using spaces.If tabsize is not given, a tab size of 8 characters is assumed."""return ""def find(self, sub, start=None, end=None): # real signature unknown; restored from __doc__"""S.find(sub[, start[, end]]) -> intReturn the lowest index in S where substring sub is found,such that sub is contained within S[start:end].  Optionalarguments start and end are interpreted as in slice notation.Return -1 on failure."""return 0def format(self, *args, **kwargs): # known special case of str.format"""格式化输出三种形式：形式一.>>> print('{0}{1}{0}'.format('a','b'))aba形式二：（必须一一对应）>>> print('{}{}{}'.format('a','b'))Traceback (most recent call last):File "<input>", line 1, in <module>IndexError: tuple index out of range>>> print('{}{}'.format('a','b'))ab形式三：>>> print('{name} {age}'.format(age=12,name='lhf'))lhf 12S.format(*args, **kwargs) -> strReturn a formatted version of S, using substitutions from args and kwargs.The substitutions are identified by braces ('{' and '}')."""passdef format_map(self, mapping): # real signature unknown; restored from __doc__"""与format区别'{name}'.format(**dict(name='alex'))'{name}'.format_map(dict(name='alex'))S.format_map(mapping) -> strReturn a formatted version of S, using substitutions from mapping.The substitutions are identified by braces ('{' and '}')."""return ""def index(self, sub, start=None, end=None): # real signature unknown; restored from __doc__"""S.index(sub[, start[, end]]) -> intLike S.find() but raise ValueError when the substring is not found."""return 0def isalnum(self): # real signature unknown; restored from __doc__"""至少一个字符，且都是字母或数字才返回TrueS.isalnum() -> boolReturn True if all characters in S are alphanumericand there is at least one character in S, False otherwise."""return Falsedef isalpha(self): # real signature unknown; restored from __doc__"""至少一个字符，且都是字母才返回TrueS.isalpha() -> boolReturn True if all characters in S are alphabeticand there is at least one character in S, False otherwise."""return Falsedef isdecimal(self): # real signature unknown; restored from __doc__"""S.isdecimal() -> boolReturn True if there are only decimal characters in S,False otherwise."""return Falsedef isdigit(self): # real signature unknown; restored from __doc__"""S.isdigit() -> boolReturn True if all characters in S are digitsand there is at least one character in S, False otherwise."""return Falsedef isidentifier(self): # real signature unknown; restored from __doc__"""字符串为关键字返回TrueS.isidentifier() -> boolReturn True if S is a valid identifier accordingto the language definition.Use keyword.iskeyword() to test for reserved identifierssuch as "def" and "class"."""return Falsedef islower(self): # real signature unknown; restored from __doc__"""至少一个字符，且都是小写字母才返回TrueS.islower() -> boolReturn True if all cased characters in S are lowercase and there isat least one cased character in S, False otherwise."""return Falsedef isnumeric(self): # real signature unknown; restored from __doc__"""S.isnumeric() -> boolReturn True if there are only numeric characters in S,False otherwise."""return Falsedef isprintable(self): # real signature unknown; restored from __doc__"""S.isprintable() -> boolReturn True if all characters in S are consideredprintable in repr() or S is empty, False otherwise."""return Falsedef isspace(self): # real signature unknown; restored from __doc__"""至少一个字符，且都是空格才返回TrueS.isspace() -> boolReturn True if all characters in S are whitespaceand there is at least one character in S, False otherwise."""return Falsedef istitle(self): # real signature unknown; restored from __doc__""">>> a='Hello'>>> a.istitle()True>>> a='HellP'>>> a.istitle()FalseS.istitle() -> boolReturn True if S is a titlecased string and there is at least onecharacter in S, i.e. upper- and titlecase characters may onlyfollow uncased characters and lowercase characters only cased ones.Return False otherwise."""return Falsedef isupper(self): # real signature unknown; restored from __doc__"""S.isupper() -> boolReturn True if all cased characters in S are uppercase and there isat least one cased character in S, False otherwise."""return Falsedef join(self, iterable): # real signature unknown; restored from __doc__"""#对序列进行操作（分别使用' '与':'作为分隔符）>>> seq1 = ['hello','good','boy','doiido']>>> print ' '.join(seq1)hello good boy doiido>>> print ':'.join(seq1)hello:good:boy:doiido#对字符串进行操作>>> seq2 = "hello good boy doiido">>> print ':'.join(seq2)h:e:l:l:o: :g:o:o:d: :b:o:y: :d:o:i:i:d:o#对元组进行操作>>> seq3 = ('hello','good','boy','doiido')>>> print ':'.join(seq3)hello:good:boy:doiido#对字典进行操作>>> seq4 = {'hello':1,'good':2,'boy':3,'doiido':4}>>> print ':'.join(seq4)boy:good:doiido:hello#合并目录>>> import os>>> os.path.join('/hello/','good/boy/','doiido')'/hello/good/boy/doiido'S.join(iterable) -> strReturn a string which is the concatenation of the strings in theiterable.  The separator between elements is S."""return ""def ljust(self, width, fillchar=None): # real signature unknown; restored from __doc__"""S.ljust(width[, fillchar]) -> strReturn S left-justified in a Unicode string of length width. Padding isdone using the specified fill character (default is a space)."""return ""def lower(self): # real signature unknown; restored from __doc__"""S.lower() -> strReturn a copy of the string S converted to lowercase."""return ""def lstrip(self, chars=None): # real signature unknown; restored from __doc__"""S.lstrip([chars]) -> strReturn a copy of the string S with leading whitespace removed.If chars is given and not None, remove characters in chars instead."""return ""def maketrans(self, *args, **kwargs): # real signature unknown"""Return a translation table usable for str.translate().If there is only one argument, it must be a dictionary mapping Unicodeordinals (integers) or characters to Unicode ordinals, strings or None.Character keys will be then converted to ordinals.If there are two arguments, they must be strings of equal length, andin the resulting dictionary, each character in x will be mapped to thecharacter at the same position in y. If there is a third argument, itmust be a string, whose characters will be mapped to None in the result."""passdef partition(self, sep): # real signature unknown; restored from __doc__"""以sep为分割，将S分成head,sep,tail三部分S.partition(sep) -> (head, sep, tail)Search for the separator sep in S, and return the part before it,the separator itself, and the part after it.  If the separator is notfound, return S and two empty strings."""passdef replace(self, old, new, count=None): # real signature unknown; restored from __doc__"""S.replace(old, new[, count]) -> strReturn a copy of S with all occurrences of substringold replaced by new.  If the optional argument count isgiven, only the first count occurrences are replaced."""return ""def rfind(self, sub, start=None, end=None): # real signature unknown; restored from __doc__"""S.rfind(sub[, start[, end]]) -> intReturn the highest index in S where substring sub is found,such that sub is contained within S[start:end].  Optionalarguments start and end are interpreted as in slice notation.Return -1 on failure."""return 0def rindex(self, sub, start=None, end=None): # real signature unknown; restored from __doc__"""S.rindex(sub[, start[, end]]) -> intLike S.rfind() but raise ValueError when the substring is not found."""return 0def rjust(self, width, fillchar=None): # real signature unknown; restored from __doc__"""S.rjust(width[, fillchar]) -> strReturn S right-justified in a string of length width. Padding isdone using the specified fill character (default is a space)."""return ""def rpartition(self, sep): # real signature unknown; restored from __doc__"""S.rpartition(sep) -> (head, sep, tail)Search for the separator sep in S, starting at the end of S, and returnthe part before it, the separator itself, and the part after it.  If theseparator is not found, return two empty strings and S."""passdef rsplit(self, sep=None, maxsplit=-1): # real signature unknown; restored from __doc__"""S.rsplit(sep=None, maxsplit=-1) -> list of stringsReturn a list of the words in S, using sep as thedelimiter string, starting at the end of the string andworking to the front.  If maxsplit is given, at most maxsplitsplits are done. If sep is not specified, any whitespace stringis a separator."""return []def rstrip(self, chars=None): # real signature unknown; restored from __doc__"""S.rstrip([chars]) -> strReturn a copy of the string S with trailing whitespace removed.If chars is given and not None, remove characters in chars instead."""return ""def split(self, sep=None, maxsplit=-1): # real signature unknown; restored from __doc__"""以sep为分割，将S切分成列表，与partition的区别在于切分结果不包含sep，如果一个字符串中包含多个sep那么maxsplit为最多切分成几部分>>> a='a,b c\nd\te'>>> a.split()['a,b', 'c', 'd', 'e']S.split(sep=None, maxsplit=-1) -> list of stringsReturn a list of the words in S, using sep as thedelimiter string.  If maxsplit is given, at most maxsplitsplits are done. If sep is not specified or is None, anywhitespace string is a separator and empty strings areremoved from the result."""return []def splitlines(self, keepends=None): # real signature unknown; restored from __doc__"""Python splitlines() 按照行('\r', '\r\n', \n')分隔，返回一个包含各行作为元素的列表，如果参数 keepends 为 False，不包含换行符，如        果为 True，则保留换行符。>>> x'adsfasdf\nsadf\nasdf\nadf'>>> x.splitlines()['adsfasdf', 'sadf', 'asdf', 'adf']>>> x.splitlines(True)['adsfasdf\n', 'sadf\n', 'asdf\n', 'adf']S.splitlines([keepends]) -> list of stringsReturn a list of the lines in S, breaking at line boundaries.Line breaks are not included in the resulting list unless keependsis given and true."""return []def startswith(self, prefix, start=None, end=None): # real signature unknown; restored from __doc__"""S.startswith(prefix[, start[, end]]) -> boolReturn True if S starts with the specified prefix, False otherwise.With optional start, test S beginning at that position.With optional end, stop comparing S at that position.prefix can also be a tuple of strings to try."""return Falsedef strip(self, chars=None): # real signature unknown; restored from __doc__"""S.strip([chars]) -> strReturn a copy of the string S with leading and trailingwhitespace removed.If chars is given and not None, remove characters in chars instead."""return ""def swapcase(self): # real signature unknown; restored from __doc__"""大小写反转S.swapcase() -> strReturn a copy of S with uppercase characters converted to lowercaseand vice versa."""return ""def title(self): # real signature unknown; restored from __doc__"""S.title() -> strReturn a titlecased version of S, i.e. words start with title casecharacters, all remaining cased characters have lower case."""return ""def translate(self, table): # real signature unknown; restored from __doc__"""table=str.maketrans('alex','big SB')a='hello abc'print(a.translate(table))S.translate(table) -> strReturn a copy of the string S in which each character has been mappedthrough the given translation table. The table must implementlookup/indexing via __getitem__, for instance a dictionary or list,mapping Unicode ordinals to Unicode ordinals, strings, or None. Ifthis operation raises LookupError, the character is left untouched.Characters mapped to None are deleted."""return ""def upper(self): # real signature unknown; restored from __doc__"""S.upper() -> strReturn a copy of S converted to uppercase."""return ""def zfill(self, width): # real signature unknown; restored from __doc__"""原来字符右对齐，不够用0补齐S.zfill(width) -> strPad a numeric string S with zeros on the left, to fill a fieldof the specified width. The string S is never truncated."""return ""def __add__(self, *args, **kwargs): # real signature unknown""" Return self+value. """passdef __contains__(self, *args, **kwargs): # real signature unknown""" Return key in self. """passdef __eq__(self, *args, **kwargs): # real signature unknown""" Return self==value. """passdef __format__(self, format_spec): # real signature unknown; restored from __doc__"""S.__format__(format_spec) -> strReturn a formatted version of S as described by format_spec."""return ""def __getattribute__(self, *args, **kwargs): # real signature unknown""" Return getattr(self, name). """passdef __getitem__(self, *args, **kwargs): # real signature unknown""" Return self[key]. """passdef __getnewargs__(self, *args, **kwargs): # real signature unknownpassdef __ge__(self, *args, **kwargs): # real signature unknown""" Return self>=value. """passdef __gt__(self, *args, **kwargs): # real signature unknown""" Return self>value. """passdef __hash__(self, *args, **kwargs): # real signature unknown""" Return hash(self). """passdef __init__(self, value='', encoding=None, errors='strict'): # known special case of str.__init__"""str(object='') -> strstr(bytes_or_buffer[, encoding[, errors]]) -> strCreate a new string object from the given object. If encoding orerrors is specified, then the object must expose a data bufferthat will be decoded using the given encoding and error handler.Otherwise, returns the result of object.__str__() (if defined)or repr(object).encoding defaults to sys.getdefaultencoding().errors defaults to 'strict'.# (copied from class doc)"""passdef __iter__(self, *args, **kwargs): # real signature unknown""" Implement iter(self). """passdef __len__(self, *args, **kwargs): # real signature unknown""" Return len(self). """passdef __le__(self, *args, **kwargs): # real signature unknown""" Return self<=value. """passdef __lt__(self, *args, **kwargs): # real signature unknown""" Return self<value. """passdef __mod__(self, *args, **kwargs): # real signature unknown""" Return self%value. """passdef __mul__(self, *args, **kwargs): # real signature unknown""" Return self*value.n """pass@staticmethod # known case of __new__def __new__(*args, **kwargs): # real signature unknown""" Create and return a new object.  See help(type) for accurate signature. """passdef __ne__(self, *args, **kwargs): # real signature unknown""" Return self!=value. """passdef __repr__(self, *args, **kwargs): # real signature unknown""" Return repr(self). """passdef __rmod__(self, *args, **kwargs): # real signature unknown""" Return value%self. """passdef __rmul__(self, *args, **kwargs): # real signature unknown""" Return self*value. """passdef __sizeof__(self): # real signature unknown; restored from __doc__""" S.__sizeof__() -> size of S in memory, in bytes """passdef __str__(self, *args, **kwargs): # real signature unknown""" Return str(self). """pass字符串工厂函数

num = "1"  #unicode
num.isdigit()   # True
num.isdecimal() # True
num.isnumeric() # True

num = "1" # 全角
num.isdigit()   # True
num.isdecimal() # True
num.isnumeric() # True

num = b"1" # byte
num.isdigit()   # True
num.isdecimal() # AttributeError 'bytes' object has no attribute 'isdecimal'
num.isnumeric() # AttributeError 'bytes' object has no attribute 'isnumeric'

num = "IV" # 罗马数字
num.isdigit()   # True
num.isdecimal() # False
num.isnumeric() # True

num = "四" # 汉字
num.isdigit()   # False
num.isdecimal() # False
num.isnumeric() # True===================
isdigit()
True: Unicode数字，byte数字（单字节），全角数字（双字节），罗马数字
False: 汉字数字
Error: 无isdecimal()
True: Unicode数字，，全角数字（双字节）
False: 罗马数字，汉字数字
Error: byte数字（单字节）isnumeric()
True: Unicode数字，全角数字（双字节），罗马数字，汉字数字
False: 无
Error: byte数字（单字节）================
import unicodedataunicodedata.digit("2")   # 2
unicodedata.decimal("2") # 2
unicodedata.numeric("2") # 2.0

unicodedata.digit("2")   # 2
unicodedata.decimal("2") # 2
unicodedata.numeric("2") # 2.0

unicodedata.digit(b"3")   # TypeError: must be str, not bytes
unicodedata.decimal(b"3") # TypeError: must be str, not bytes
unicodedata.numeric(b"3") # TypeError: must be str, not bytes

unicodedata.digit("Ⅷ")   # ValueError: not a digit
unicodedata.decimal("Ⅷ") # ValueError: not a decimal
unicodedata.numeric("Ⅷ") # 8.0

unicodedata.digit("四")   # ValueError: not a digit
unicodedata.decimal("四") # ValueError: not a decimal
unicodedata.numeric("四") # 4.0#"〇","零","一","壱","二","弐","三","参","四","五","六","七","八","九","十","廿","卅","卌","百","千","万","万","亿"

class list(object):"""list() -> new empty listlist(iterable) -> new list initialized from iterable's items"""def append(self, p_object): # real signature unknown; restored from __doc__""" L.append(object) -> None -- append object to end """passdef clear(self): # real signature unknown; restored from __doc__""" L.clear() -> None -- remove all items from L """passdef copy(self): # real signature unknown; restored from __doc__""" L.copy() -> list -- a shallow copy of L """return []def count(self, value): # real signature unknown; restored from __doc__""" L.count(value) -> integer -- return number of occurrences of value """return 0def extend(self, iterable): # real signature unknown; restored from __doc__""" L.extend(iterable) -> None -- extend list by appending elements from the iterable """passdef index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__"""L.index(value, [start, [stop]]) -> integer -- return first index of value.Raises ValueError if the value is not present."""return 0def insert(self, index, p_object): # real signature unknown; restored from __doc__""" L.insert(index, object) -- insert object before index """passdef pop(self, index=None): # real signature unknown; restored from __doc__"""L.pop([index]) -> item -- remove and return item at index (default last).Raises IndexError if list is empty or index is out of range."""passdef remove(self, value): # real signature unknown; restored from __doc__"""L.remove(value) -> None -- remove first occurrence of value.Raises ValueError if the value is not present."""passdef reverse(self): # real signature unknown; restored from __doc__""" L.reverse() -- reverse *IN PLACE* """passdef sort(self, key=None, reverse=False): # real signature unknown; restored from __doc__""" L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE* """passdef __add__(self, *args, **kwargs): # real signature unknown""" Return self+value. """passdef __contains__(self, *args, **kwargs): # real signature unknown""" Return key in self. """passdef __delitem__(self, *args, **kwargs): # real signature unknown""" Delete self[key]. """passdef __eq__(self, *args, **kwargs): # real signature unknown""" Return self==value. """passdef __getattribute__(self, *args, **kwargs): # real signature unknown""" Return getattr(self, name). """passdef __getitem__(self, y): # real signature unknown; restored from __doc__""" x.__getitem__(y) <==> x[y] """passdef __ge__(self, *args, **kwargs): # real signature unknown""" Return self>=value. """passdef __gt__(self, *args, **kwargs): # real signature unknown""" Return self>value. """passdef __iadd__(self, *args, **kwargs): # real signature unknown""" Implement self+=value. """passdef __imul__(self, *args, **kwargs): # real signature unknown""" Implement self*=value. """passdef __init__(self, seq=()): # known special case of list.__init__"""list() -> new empty listlist(iterable) -> new list initialized from iterable's items# (copied from class doc)"""passdef __iter__(self, *args, **kwargs): # real signature unknown""" Implement iter(self). """passdef __len__(self, *args, **kwargs): # real signature unknown""" Return len(self). """passdef __le__(self, *args, **kwargs): # real signature unknown""" Return self<=value. """passdef __lt__(self, *args, **kwargs): # real signature unknown""" Return self<value. """passdef __mul__(self, *args, **kwargs): # real signature unknown""" Return self*value.n """pass@staticmethod # known case of __new__def __new__(*args, **kwargs): # real signature unknown""" Create and return a new object.  See help(type) for accurate signature. """passdef __ne__(self, *args, **kwargs): # real signature unknown""" Return self!=value. """passdef __repr__(self, *args, **kwargs): # real signature unknown""" Return repr(self). """passdef __reversed__(self): # real signature unknown; restored from __doc__""" L.__reversed__() -- return a reverse iterator over the list """passdef __rmul__(self, *args, **kwargs): # real signature unknown""" Return self*value. """passdef __setitem__(self, *args, **kwargs): # real signature unknown""" Set self[key] to value. """passdef __sizeof__(self): # real signature unknown; restored from __doc__""" L.__sizeof__() -- size of L in memory, in bytes """pass__hash__ = None

class set(object):"""set() -> new empty set objectset(iterable) -> new set objectBuild an unordered collection of unique elements."""def add(self, *args, **kwargs): # real signature unknown"""Add an element to a set.This has no effect if the element is already present."""passdef clear(self, *args, **kwargs): # real signature unknown""" Remove all elements from this set. """passdef copy(self, *args, **kwargs): # real signature unknown""" Return a shallow copy of a set. """passdef difference(self, *args, **kwargs): # real signature unknown"""相当于s1-s2Return the difference of two or more sets as a new set.(i.e. all elements that are in this set but not the others.)"""passdef difference_update(self, *args, **kwargs): # real signature unknown""" Remove all elements of another set from this set. """passdef discard(self, *args, **kwargs): # real signature unknown"""与remove功能相同，删除元素不存在时不会抛出异常Remove an element from a set if it is a member.If the element is not a member, do nothing."""passdef intersection(self, *args, **kwargs): # real signature unknown"""相当于s1&s2Return the intersection of two sets as a new set.(i.e. all elements that are in both sets.)"""passdef intersection_update(self, *args, **kwargs): # real signature unknown""" Update a set with the intersection of itself and another. """passdef isdisjoint(self, *args, **kwargs): # real signature unknown""" Return True if two sets have a null intersection. """passdef issubset(self, *args, **kwargs): # real signature unknown""" 相当于s1<=s2Report whether another set contains this set. """passdef issuperset(self, *args, **kwargs): # real signature unknown"""相当于s1>=s2Report whether this set contains another set. """passdef pop(self, *args, **kwargs): # real signature unknown"""Remove and return an arbitrary set element.Raises KeyError if the set is empty."""passdef remove(self, *args, **kwargs): # real signature unknown"""Remove an element from a set; it must be a member.If the element is not a member, raise a KeyError."""passdef symmetric_difference(self, *args, **kwargs): # real signature unknown"""相当于s1^s2Return the symmetric difference of two sets as a new set.(i.e. all elements that are in exactly one of the sets.)"""passdef symmetric_difference_update(self, *args, **kwargs): # real signature unknown""" Update a set with the symmetric difference of itself and another. """passdef union(self, *args, **kwargs): # real signature unknown"""相当于s1|s2Return the union of sets as a new set.(i.e. all elements that are in either set.)"""passdef update(self, *args, **kwargs): # real signature unknown""" Update a set with the union of itself and others. """passdef __and__(self, *args, **kwargs): # real signature unknown""" Return self&value. """passdef __contains__(self, y): # real signature unknown; restored from __doc__""" x.__contains__(y) <==> y in x. """passdef __eq__(self, *args, **kwargs): # real signature unknown""" Return self==value. """passdef __getattribute__(self, *args, **kwargs): # real signature unknown""" Return getattr(self, name). """passdef __ge__(self, *args, **kwargs): # real signature unknown""" Return self>=value. """passdef __gt__(self, *args, **kwargs): # real signature unknown""" Return self>value. """passdef __iand__(self, *args, **kwargs): # real signature unknown""" Return self&=value. """passdef __init__(self, seq=()): # known special case of set.__init__"""set() -> new empty set objectset(iterable) -> new set objectBuild an unordered collection of unique elements.# (copied from class doc)"""passdef __ior__(self, *args, **kwargs): # real signature unknown""" Return self|=value. """passdef __isub__(self, *args, **kwargs): # real signature unknown""" Return self-=value. """passdef __iter__(self, *args, **kwargs): # real signature unknown""" Implement iter(self). """passdef __ixor__(self, *args, **kwargs): # real signature unknown""" Return self^=value. """passdef __len__(self, *args, **kwargs): # real signature unknown""" Return len(self). """passdef __le__(self, *args, **kwargs): # real signature unknown""" Return self<=value. """passdef __lt__(self, *args, **kwargs): # real signature unknown""" Return self<value. """pass@staticmethod # known case of __new__def __new__(*args, **kwargs): # real signature unknown""" Create and return a new object.  See help(type) for accurate signature. """passdef __ne__(self, *args, **kwargs): # real signature unknown""" Return self!=value. """passdef __or__(self, *args, **kwargs): # real signature unknown""" Return self|value. """passdef __rand__(self, *args, **kwargs): # real signature unknown""" Return value&self. """passdef __reduce__(self, *args, **kwargs): # real signature unknown""" Return state information for pickling. """passdef __repr__(self, *args, **kwargs): # real signature unknown""" Return repr(self). """passdef __ror__(self, *args, **kwargs): # real signature unknown""" Return value|self. """passdef __rsub__(self, *args, **kwargs): # real signature unknown""" Return value-self. """passdef __rxor__(self, *args, **kwargs): # real signature unknown""" Return value^self. """passdef __sizeof__(self): # real signature unknown; restored from __doc__""" S.__sizeof__() -> size of S in memory, in bytes """passdef __sub__(self, *args, **kwargs): # real signature unknown""" Return self-value. """passdef __xor__(self, *args, **kwargs): # real signature unknown""" Return self^value. """pass__hash__ = None查看