An exception is reported when an element is deleted when the Python dictionary is traversed.

An exception is reported when an element is deleted when the Python dictionary is traversed.

Error Code ①

D = {'A': 1, 'B': 0, 'C': 1, 'D': 0} for key, val in d. items (): del (d [k])

Error Code ② -- for Python3

D = {'A': 1, 'B': 0, 'C': 1, 'D': 0} for key, val in d. keys (): del (d [k])

Correct code

D = {'A': 1, 'B': 0, 'C': 1, 'D': 0} keys = list (d. keys () for key, val in keys: del (d [k])

The above article solves the problem that an exception is reported when the elements are deleted when the Python dictionary is traversed. I hope this article will give you a reference and support for more.