‘NoneType‘ object is not iterable PYTHON报错
ls='python'li=list(ls)flag=0p=list(set(li))q=p.sort(key=li.index)print(q)print(type(q))for i in q: print(i)错误原因:sort无返回值,所以导致了q 是NONE类型runfile('C:/Users/hp/.spyder-py3/temp.py', wdir='C:/Users/hp/.spyder-py3')None<class 'NoneType'>T
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2022-03-21 22:34:06 ·
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