实例说明Python中比较运算符的使用_程序人生

实例说明Python中比较运算符的使用

admin

2023-07-31 02:25:06

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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：

2015513120032469.jpg (585×480)

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 4 - a is less than b\" 
else:
  print \"Line 4 - a is not less than 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 <= b ):
  print \"Line 6 - a is either less than or equal to b\"
else:
  print \"Line 6 - a is neither less than nor equal to b\"

if ( b >= 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

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实例说明Python中比较运算符的使用

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