作业：

# (1)移除name变量对应的值两边的空格

name =" aleX"

print(name.strip())

# (2)判断name变量对应的值是否以"al"开头，并输出结果

# 此时是以空格为开头

print(name.startswith("al"))

# (3)判断name变量对应的值是否以"x"结尾，并输出结果

print(name.endswith("X"))

# (4)将name变量对应的值中的"1"替换为"p",并输出结果

name=name.replace("l","p")

print(name)

# (5)将name变量对应的值根据"1"分割，并输出结果

list=name.split('l')

print(list)

list1=name.split('p')

print(list1)

# (6)将name变量对应的值变大写，并输出结果

print(name.upper())

# (7)将name变量对应的值变小写，并输出结果

print(name.lower())

# (8)请输出name变量对应的值的第2个字符

print(name[2])

# (9)请输出name变量对应的值的前3个字符

print(name[0:4])

# (10)请输出name变量对应的值的后2个字符

print(name[2:4])

# (11)请输出name变量对应的值的"e"所在的索引的位置

print(name.find('e'))

# (12)获取子序列，去掉最后一个字符，如oldboy则获取oldbo

print(name[0:len(name)-1])

总结：

# 数字类型

# 整型int

# number = 100 # int(100)

# number2 = int(100)

# print(number)

# print(number2)

# 浮点型 float

# sal = 15.0 # float(15.0)

# sal2 = float(15.0)

# print(sal)

# print(sal2)

# 字符串类型

# name = 'tank'

# name2 = "tank"

# content = '''

# 1r1r1r

# 21r12r1

# r12r

# 12r1r21

# r12r1r2

# 12r1r

# '''

#

# print(name, name2, content)

# python中字符串可以相加、相乘

# print('tank ' * 5)

# print('tank' + 'jam')

# print('tank', 'jam')

# 列表类型

# []括号内以逗号隔开，可存放多个不同类型的值。

# list1 = ['张曼曼', 'tank', '涂懿磊', 11, 1.0, ['jason', 200]]

# print(list1[0])

# print(list1[5][0])

# 字典类型

# 在{}内，都逗号隔开，可存放多个值，每个值以key: value的形式存储

# 存

# dict1 = {'name': "tank", "age": 18} # {name="tank", "age"=18}

# 取

# print(dict1["name"])

# 布尔类型

# True or False

# print(10 == 10) # True

# print(10 == 11) # False

# 注意: 所有数据类型都自带布尔， 0、None、空都为False

# if 0:

# print('111')

#

# if None:

# print('111')

#

# if []:

# print('111')

#

# else:

# print('222')

# 格式化输出

# 可以在输出时给字符串类型做一次替换

# %s占位符，%d可以替换数字类型

# number = input('请输入:')

# str1 = '''

# 尊敬的用户，您的话费余额为%s元。

# ''' % number

#

# print(str1)

# for循环

# list1 = [1, 2, 3, 4, 5]

# for line in list1:

# print(line)

# for line in range(1, 10):

# print(line)

# dict1 = {'name': "tank", "age": 18}

# for key in dict1:

# print(key)

# print(dict1[key])

# '''

# str1='my name is xxx,my age is 18'

# #祛除左右空格strip

# print(str1)

# print(str1.strip())

# #切分split

# list2=str1.split(' ')

# print(list2)

# str2='my name is xxx,my age is 18'

# for line in str2:

# print(line,end=" ")

# str6 = 'my name in Tank'

# print(str6.lower())

# print(str6.upper())#lower 小写 upper 大写

# print(str6.startswith('my')) #startswith 判断前面 endswith 判断后面

# print(str6.startswith('My'))

# print(str6.endswith('tank'))

# #fomat 三种玩法

# str7 = 'my name in {}，my age is{}'

# str7=str7.format('tank',18)

# print(str7)

#

# str7='my name in {1}，my age is{2}'

# str7=str7.format('tank',18,111)

# print(str7)

#

# str7='my name in {name}，my age is{age}'

# str7=str7.format(name='tank',age=18)

# print(str7)

# '''

# # join 对列表中的数据按照某种标识拼接 拼接要为字符串类型

# name ='tank'

# age='20'

# print(':'.join([name,age]))

# #replace

# str8 ='old new'

# str8=str8.replace('old','new')

# print(str8)

# #isdigit 判断字符串是否为数字

# ID =input('请输入')

# print(ID)

# print(ID.isdigit())

list1=['tank',18,'womale',3.0,9]

print(list1[4])

print(list1[-2])

# '''

# str1='my name is xxx,my age is 18'

# #祛除左右空格strip

# print(str1)

# print(str1.strip())

# #切分split

# list2=str1.split(' ')

# print(list2)

# str2='my name is xxx,my age is 18'

# for line in str2:

# print(line,end=" ")

# str6 = 'my name in Tank'

# print(str6.lower())

# print(str6.upper())#lower 小写 upper 大写

# print(str6.startswith('my')) #startswith 判断前面 endswith 判断后面

# print(str6.startswith('My'))

# print(str6.endswith('tank'))

# #fomat 三种玩法

# str7 = 'my name in {}，my age is{}'

# str7=str7.format('tank',18)

# print(str7)

#

# str7='my name in {1}，my age is{2}'

# str7=str7.format('tank',18,111)

# print(str7)

#

# str7='my name in {name}，my age is{age}'

# str7=str7.format(name='tank',age=18)

# print(str7)

# '''

# # join 对列表中的数据按照某种标识拼接 拼接要为字符串类型

# name ='tank'

# age='20'

# print(':'.join([name,age]))

# #replace

# str8 ='old new'

# str8=str8.replace('old','new')

# print(str8)

# #isdigit 判断字符串是否为数字

# ID =input('请输入')

# print(ID)

# print(ID.isdigit())

list1=['tank',18,'womale',3.0,9]

print(list1[4])

print(list1[-2])

print(list1[1:5:2])

print(len(list1))

#追加 append()

list1.append('sjkd')

print(list1)

#删除 pop()默认最后一个-1

print(list1.pop())

print(list1.pop(0))

print(list1)

list1.

#循环