下表列出了所有Python语言支持的逻辑运算符。假设变量a持有10和变量b持有20,则:
示例:
试试下面的例子就明白了所有的Python编程语言提供了逻辑运算符:
#!/usr/bin/python a = 10 b = 20 c = 0 if ( a and b ): print \"Line 1 - a and b are true\" else: print \"Line 1 - Either a is not true or b is not true\" if ( a or b ): print \"Line 2 - Either a is true or b is true or both are true\" else: print \"Line 2 - Neither a is true nor b is true\" a = 0 if ( a and b ): print \"Line 3 - a and b are true\" else: print \"Line 3 - Either a is not true or b is not true\" if ( a or b ): print \"Line 4 - Either a is true or b is true or both are true\" else: print \"Line 4 - Neither a is true nor b is true\" if not( a and b ): print \"Line 5 - Either a is not true or b is not true\" else: print \"Line 5 - a and b are true\"
当执行上面的程序它会产生以下结果:
Line 1 - a and b are true Line 2 - Either a is true or b is true or both are true Line 3 - Either a is not true or b is not true Line 4 - Either a is true or b is true or both are true Line 5 - Either a is not true or b is not true
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