General decorator to wrap try except in python?

Question

I\'d interacting with a lot of deeply nested json I didn\'t write, and would like to make my python script more \'forgiving\' to invalid input. I find myself writing involve

Answer 1

You could use a defaultdict and the context manager approach as outlined in Raymond Hettinger's PyCon 2013 presentation

from collections import defaultdict
from contextlib import contextmanager

@contextmanager
def ignored(*exceptions):
  try:
    yield
  except exceptions:
    pass 

item = defaultdict(str)

obj = dict()
with ignored(Exception):
  item['a'] = obj.get(2).get(3) 

print item['a']

obj[2] = dict()
obj[2][3] = 4

with ignored(Exception):
  item['a'] = obj.get(2).get(3) 

print item['a']