如何在迭代時從字典中刪除項目？ - How to delete items from a dictionary while iterating over it?

問題：

Is it legitimate to delete items from a dictionary in Python while iterating over it?在迭代它時從 Python 中的字典中刪除項目是否合法？

For example:例如：

for k, v in mydict.iteritems():
   if k == val:
     del mydict[k]

The idea is to remove elements that don't meet a certain condition from the dictionary, instead of creating a new dictionary that's a subset of the one being iterated over.這個想法是從字典中刪除不滿足特定條件的元素，而不是創建一個新字典，它是被迭代的一個子集。

Is this a good solution?這是一個很好的解決方案嗎？ Are there more elegant/efficient ways?有沒有更優雅/有效的方法？

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解決方案：

參考一： https://stackoom.com/question/MarS
參考二： How to delete items from a dictionary while iterating over it?