Python3.2中Print函数用法实例详解-Python Tutorial-php.cn

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Python3.2中Print函数用法实例详解

Jun 10, 2016 pm 03:12 PM

本文实例讲述了Python3.2中Print函数用法。分享给大家供大家参考。具体分析如下：

1. 输出字符串

>>> strHello = 'Hello World' 
>>> print (strHello)
Hello World

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2. 格式化输出整数

支持参数格式化，与C语言的printf类似

>>> strHello = "the length of (%s) is %d" %('Hello World',len('Hello World'))
>>> print (strHello)
the length of (Hello World) is 11

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3. 格式化输出16进制，十进制，八进制整数

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

>>> nHex = 0xFF
>>> print("nHex = %x,nDec = %d,nOct = %o" %(nHex,nHex,nHex))
nHex = ff,nDec = 255,nOct = 377

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4.格式化输出浮点数(float)

import math
>>> print('PI=%f'%math.pi)
PI=3.141593
>>> print ("PI = %10.3f" % math.pi)
PI =   3.142
>>> print ("PI = %-10.3f" % math.pi)
PI = 3.142   
>>> print ("PI = %06d" % int(math.pi))
PI = 000003

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5. 格式化输出浮点数(float)

>>> precise = 3
>>> print ("%.3s " % ("python"))
pyt
>>> precise = 4
>>> print ("%.*s" % (4,"python"))
pyth
>>> print ("%10.3s " % ("python"))
    pyt

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6.输出列表(List)

输出列表

>>> lst = [1,2,3,4,'python']
>>> print (lst)
[1, 2, 3, 4, 'python']

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输出字典

>>> d = {1:'A',2:'B',3:'C',4:'D'}
>>> print(d)
{1: 'A', 2: 'B', 3: 'C', 4: 'D'}

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7. 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(0,6):
  print (i,)
  
0
1
2
3
4
5

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或直接使用下面的函数进行输出：

>>> import sys
>>> sys.stdout.write('Hello World')
Hello World

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希望本文所述对大家的Python程序设计有所帮助。

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