欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

实例说明Python中比较运算符的使用

程序员文章站 2022-04-12 09:53:31
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...

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:

实例说明Python中比较运算符的使用

 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