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在Python中使用成員運(yùn)算符的示例

 更新時(shí)間:2015年05月13日 12:22:24   投稿:goldensun  
這篇文章主要介紹了在Python中使用成員運(yùn)算符的示例,是Python學(xué)習(xí)中的基礎(chǔ)知識(shí),需要的朋友可以參考下

下表列出了所有Python語(yǔ)言支持的成員運(yùn)算符。

2015513122253479.jpg (586×176)

 例如:

試試下面的例子就明白了所有的Python編程語(yǔ)言提供會(huì)員運(yùn)算符:

#!/usr/bin/python

a = 10
b = 20
list = [1, 2, 3, 4, 5 ];

if ( a in list ):
  print "Line 1 - a is available in the given list"
else:
  print "Line 1 - a is not available in the given list"

if ( b not in list ):
  print "Line 2 - b is not available in the given list"
else:
  print "Line 2 - b is available in the given list"

a = 2
if ( a in list ):
  print "Line 3 - a is available in the given list"
else:
  print "Line 3 - a is not available in the given list"

當(dāng)執(zhí)行上面的程序它會(huì)產(chǎn)生以下結(jié)果:

Line 1 - a is not available in the given list
Line 2 - b is not available in the given list
Line 3 - a is available in the given list

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