在Python中使用成员运算符的示例

下表列出了所有Python语言支持的成员运算符。

例如：

试试下面的例子就明白了所有的Python编程语言提供会员运算符：

    #!/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"

当执行上面的程序它会产生以下结果：

    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