在遍历过程中删除 RuntimeError: dictionary changed size during iteration 词典原理

dict  not  ok

 

d = {'a': 34, 'b': 435}
rm_k = []
for k in d.keys():
    if k == 'a':
        d.pop(k)

list  ok

l = ['wer', 'a', 'ccc']
for i in l:
    if i == 'a':
        l.remove(i)

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