Re: [Python-ideas] PEP 505: None-aware operators

July 20, 2018


      On Thu, Jul 19, 2018 at 8:40 PM Michael Lee <michael.lee.0x2a@gmail.com>
wrote:
...
1. ...
2. We can already easily get the same functionality using standard
   Python. E.g., instead of doing foo?["bar"]?[0]?["baz"], we could do lookup(foo,
   "bar", 0, "baz") where lookup is a function that looks roughly like
   this:
def lookup(item, *parts):
           for part in parts:
               if item is None:
                   return None
               item = item[parts]
           return item
Try/except also looks decent.

    try:
        x = foo['bar'][0]
    except TypeError:
        x = 'default'

Re: [Python-ideas] PEP 505: None-aware operators

Michael Selik