Python check if value is in a list of dicts

Question

I have a list of dicts e.g.

[{\'name\':\'Bernard\',\'age\':7},{\'name\':\'George\',\'age\':4},{\'name\':\'Reginald\',\'age\':6}]

I\'d like to c

Answer 1

No, there cannot be a more efficient way if you have just this list of dicts.

However, if you want to check frequently, you can extract a dictionary with name:age items:

l = [{'name':'Bernard','age':7},{'name':'George','age':4},{'name':'Reginald','age':6}]
d = dict((i['name'], i['age']) for i in l)

now you have d:

{'Bernard': 7, 'George': 4, 'Reginald': 6}

and now you can check:

'Harold' in d   -> False
'George' in d   -> True

It will be much faster than iterating over the original list.