Issue 28072: Empty Strings are not parsed to None. (original) (raw)

Issue28072

Created on 2016-09-10 23:27 by Decorater, last changed 2022-04-11 14:58 by admin. This issue is now closed.

Messages (2)
msg275713 - (view)	Author: Decorater (Decorater) *	Date: 2016-09-10 23:27
I noticed that the Python interpreter does not interpret a empty string as None so I have to do this unclean workaround every time in functions that cannot have a empty string passed to them. Here is some example Code I have to do to bypass this (the function itself): def create_one(url): if url == '': url = None if url is not None: url_data = urllib.parse.urlencode(dict(url=url)) byte_data = str.encode(url_data) ret = urllib.request.urlopen(API_CREATE, data=byte_data).read().strip() almost_result = str(ret) closer_result = almost_result.strip("b") result = closer_result.strip("'") return result else: URLError('The given URL Cannot be \'None\'.') So yeah I suggest for the interpreter to interpret empty strings as None so that way it can cleanup some lines of trying to parse it to None which can be a lot of work. It also makes code simpler as well.
msg275714 - (view)	Author: Ethan Furman (ethan.furman) *	Date: 2016-09-10 23:32
Empty strings are empty strings, not None. An better way for your code example would be: def ...(): if url: .... else: raise URLError(...URL cannot be empty...)