How to replace values from specific keys in listed dictionaries? But replace should happen with a conditional (i.e. if they have 2 digits in the beginning). Preferably with list/dictionary comprehensions.

Example:

```
a_list = [{'key1': 'A picture 1', 'key2': 'location 1', 'key3': '20 title1'}, {'key1': 'A picture 2', 'key2': 'location 2', 'key3': '10 title2'}]

```

I want to remove the first two digits from the values of key3.