python字符串相等if，python判断字符串是否为空用...

发布网友 发布时间：2022-04-22 03:11

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热心网友 时间：2024-08-19 17:12

reaCode = Noneif ( reaCode == None ): print "is null"else : print "not!"if ( reaCode is None ): print "is null"else : print "not!"reaCode = ''if ( reaCode is '' ): print "is null string"else : print "not!"reaCode = ''if ( reaCo...

热心网友 时间：2024-08-19 17:20

if not str:

热心网友 时间：2024-08-19 17:18

reaCode = Noneif ( reaCode == None ): print "is null"else : print "not!"if ( reaCode is None ): print "is null"else : print "not!"reaCode = ''if ( reaCode is '' ): print "is null string"else : print "not!"reaCode = ''if ( reaCo...

热心网友 时间：2024-08-19 17:14

if not str: