#直接出字符串

strHello = 'Hello Python'

print strHello#输出结果：Hello Python

#格式化输出整数

strHello = "the length of (%s) is %d" %('Hello World',len('Hello World'))

print strHello#输出果：the length of (Hello World) is 11

#格式化输出十六进制数

nHex = 0x20

#%x --- hex 十六进制#%d --- dec 十进制#%d --- oct 八进制

print "nHex = %x,nDec = %d,nOct = %o" %(nHex,nHex,nHex)#输出结果：nHex = 20,nDec = 32,nOct = 40#使用整数的各个制打印同一个数

#格式化输出浮点数

import math#default

print "PI = %f" % math.pi#width = 10,precise = 3,align = left

print "PI = %10.3f" % math.pi

#width = 10,precise = 3,align = rigth

print "PI = %-10.3f" % math.pi#前面填充字符

print "PI = %06d" % int(math.pi)#输出结果#PI = 3.141593#PI = 3.142#PI = 3.142#PI = 000003#浮点数的格式化，精度、度和

#格式化输出字符串#precise = 3

print "%.3s " % ("jcodeer")#precise = 4

print "%.*s" % (4,"jcodeer")#width = 10,precise = 3

print "%10.3s" % ("jcodeer")#输出结果：#jco#jcod#jco#同于字符串也存在精度、度和

#格式化输出列表

l = [1,2,3,4,'jcodeer']

print l#输出结果：[1, 2, 3, 4, 'jcodeer']#于list直接打印即可

'''6.出字典(dictionary)'''d = {1:'A',2:'B',3:'C',4:'D'}

print d#输出结果：{1: 'A', 2: 'B', 3: 'C', 4: 'D'}#同python也是支持dictionary出的

#自动换行#print 会自动在行末加上回车,如果不需回车，只需在print语句的结尾添加一个逗号”,“，就可以改变它的行为。

for i in range(0,5):

print i,#万能的%r

formatter = "%r %r %r %r"

print formatter % (1, 2, 3, 4)

print formatter % ("one", "two", "three", "four")

print formatter % (True, False, False, True)

print formatter % (formatter, formatter, formatter, formatter)

print formatter % (

"I had this thing.",

"That you could type up right.",

"But it didn't sing.",

"So I said goodnight."

)#输出结果：

$ python ex8.py1 2 3 4

'one' 'two' 'three' 'four'True False False True'%r %r %r %r' '%r %r %r %r' '%r %r %r %r' '%r %r %r %r'

'I had this thing.' 'That you could type up right.' "But it didn't sing." 'So I said goodnight.'$