Convert my dictionary keys from tuples to the elements inside the tuples

Question

My dictionary has tuples as keys, and the tuples have only one element each. For each key in the dictionary I need to convert it to the string value inside the tuple.

I have tried the following code: I used key[0] because every key is a tuple of length 1.

for key in dictionary:
    dictionary[key[0]] = dictionary.pop(key)
dictionary

The code above gives the following error: RuntimeError: dictionary changed size during itera

Answer 1

You can copy your dictionary over like so:

dict_copy = {key[0]: value for key, value in dictionary.items()}

This is a dictionary comprehension, equivalent to doing

dict_copy = dict() # or {}
for key, value in dictionary.items():
    dict_copy[key[0]] = dictionary[key]