实例说明Python中比较运算符的使用
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2023-12-22 22:31:34
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下表列出了所有Python语言支持的比较操作符。假设变量a持有10和变量b持有20,则:
例如:
试试下面的例子就明白了所有的Python编程语言提供的比较操作符:
#!/usr/bin/python a = 21 b = 10 c = 0 if ( a == b ): print "Line 1 - a is equal to b" else: print "Line 1 - a is not equal to b" if ( a != b ): print "Line 2 - a is not equal to b" else: print "Line 2 - a is equal to b" if ( a b ): print "Line 3 - a is not equal to b" else: print "Line 3 - a is equal to b" if ( a b ): print "Line 5 - a is greater than b" else: print "Line 5 - a is not greater than b" a = 5; b = 20; if ( a = a ): print "Line 7 - b is either greater than or equal to b" else: print "Line 7 - b is neither greater than nor equal to b"
当执行上面的程序它会产生以下结果:
Line 1 - a is not equal to b Line 2 - a is not equal to b Line 3 - a is not equal to b Line 4 - a is not less than b Line 5 - a is greater than b Line 6 - a is either less than or equal to b Line 7 - b is either greater than or equal to b