python - Deleting keys in a dictionary stops a loop and raises error -

in code loop through keys in dictionary , if key matches condition (existence in list) key-value pair deleted:

for key in my_dict:     if key in my_list:         del my_dict[key] 

problem is, when run code error: 'dictionary changed size during iteration'. realize can't with:

for in range(len(my_dict)):... 

since key indices in dictionary change every deletion.

is there way delete elements in dictionary without raising error?

you don't need loop on dictionary.

lst  = ['4','8','15','16','23','42'] dct  = {'4':4, 'foo':'bar'} keys = dct.keys()  key in lst:     if key in keys:         dct.pop(key)