Python dict.get('key') versus dict['key'] [duplicate]

Answer 1

Accessing by brackets does not have a default but the get method does and the default is None. From the docs for get (via a = dict(); help(a.get))

Help on built-in function get:

get(...)
    D.get(k[,d]) -> D[k] if k in D, else d.  d defaults to None.