Reading from Python dict if key might not be present

Question

I am very new to Python and parsing data.

I can pull an external JSON feed into a Python dictionary and iterate over the dictionary.

for r in results:
         


        

Answer 1

There are two straightforward ways of reading from Python dict if key might not be present. for example:

dicty = {'A': 'hello', 'B': 'world'}

1. The pythonic way to access a key-value pair is:

value = dicty.get('C', 'default value')

2. The non-pythonic way:

value = dicty['C'] if dicty['C'] else 'default value'

3. even worse:

try: value = dicty['C'] except KeyError as ke: value = 'default value'