Dictionary key error → Resolve with key in dicionary

A key error has occurred. The cause was trying to access the dictionary with a key that does not exist.

If you try to access with a key that does not exist, a key error will occur, so

if key in dictionary:
	dictionary[key] = "hoge"

Or

if dictionary.haskey(key):
	dictionary[key] = "hoge"

This way to prevent errors.

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