Python safe dictionary key access

2018-06-09 15:35:24

This question already has an answer here:

Check if a given key already exists in a dictionary 18 answers

Access dict key and return None if doesn't exist 6 answers

You missed the canonical method, dict.get() :

color_1 = data.get('color')

It'll return None if the key is missing. You can set a different default as a second argument:

color_2 = dict.get('color', 'red')

Check out dict.get() . You can supply a value to return if the key is not found in the dictionary, otherwise it will return None .

>>> data = {'color': 'yellow'}
>>> data.get('color')
'yellow'
>>> data.get('name') is None
True
>>> data.get('name', 'nothing')
'nothing'

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