下表列出了所有Python語言支持的標識運算符。

示例：

試試下面的例子就明白了所有Python編程語言提供的標識運算符：

#!/usr/bin/pythona = 20b = 20if ( a is b ):  print "Line 1 - a and b have same identity"else:  print "Line 1 - a and b do not have same identity"if ( id(a) == id(b) ):  print "Line 2 - a and b have same identity"else:  print "Line 2 - a and b do not have same identity"b = 30if ( a is b ):  print "Line 3 - a and b have same identity"else:  print "Line 3 - a and b do not have same identity"if ( a is not b ):  print "Line 4 - a and b do not have same identity"else:  print "Line 4 - a and b have same identity"

當執行上面的程序它會產生以下結果：

Line 1 - a and b have same identityLine 2 - a and b have same identityLine 3 - a and b do not have same identityLine 4 - a and b do not have same identity