deleting entries in a dictionary based on a condition

Question

I have a dictionary with names as key and (age, Date of Birth) tuple as the value for those keys. E.g.

dict = {\'Adam\' : (10, \'2002-08-13\'),
        \'Eve         


        

Answer 1

The usual way is to create a new dictionary containing only the items you want to keep:

new_data = {k: v for k, v in data.iteritems() if v[0] <= 30}

In Python 3.x, use items() instead of iteritems().

If you need to change the original dictionary in place, you can use a for-loop:

for k, v in data.items():
    if v[0] > 30:
        del data[k]

In Python 3.x, use list(data.items()) instead of data.items().