本文介绍了你如何检查,如果列表为空?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

def CleanWhiteSpace(theDict):
    stuff=[]

    for key,value in theDict.items():
        for d in value:
            if value != " ":
                stuff.append(d)
                print d
                theDict[key]=stuff
            if not value[d]:
                print value
        stuff=[]
    return theDict
    print CleanWhiteSpace({'a':['1','2'],'b':['3',' '],'c':[]})

I edited this because I need more help. How do you check if c is blank? Is c is simply equal to []?

I've tried ==[] and "[]" and getting the length and == "", but nothing seems to work.

解决方案

In python, an empty list evaluates to False.

if not c:
   print "The list is empty"
else:
   print "The list is not empty"

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05-27 13:16
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