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Guido van Rossum guido at python.org
Fri Apr 15 13:03:53 EDT 2016 
Thanks for the positive tone of your message.

I do think there's some benefit in having a naming convention that's
consistent within your own code base -- especially if you're working with a
team and you can agree on a convention before you have written much code.

Joel Spolsky agrees: http://www.joelonsoftware.com/articles/Wrong.html

On Fri, Apr 15, 2016 at 9:57 AM, Richard Prosser <richard.prosser at mail.com>
wrote:

> Is there any mileage in having a naming convention to indicate the type of
> a variable? I have never really liked the fact that the Python 'duck
> typing' policy is so lax, yet the new "Type Hints" package for Python 3 is
> rather clumsy, IMO.
>
>
> For example:
>
> github_response = requests.get('https://api.github.com/user', auth=('user', 'pass'))
>  # Derived from http://docs.python-requests.org/en/master.
>
>
> The above request returns a Response
> <http://docs.python-requests.org/en/master/api/#requests.Response> object
> and so the variable has 'response' in its name.
>
>
> Likewise:
>
> word_count = total_words_in_file('text_file')
>
> where 'count' has been defined (in the IDE, by the user perhaps) as an
> Integer and the function is known to return an Integer, perhaps via a local
> 'count' or 'total' variable.
>
>
>
> I know that this has been attempted before but I think that an IDE like
> PyCharm could actually check variable usage and issue a warning if a
> conflict is detected. Also earlier usages of this 'Hungarian Notation' have
> largely been applied to compiled languages - rather strangely, in the case
> of known types - rather than an interpreted one like Python.
>
>
> Please note that I have shown suffixes above but prefixes could also be
> valid. I am not sure about relying on 'type strings' *within* a variable
> name however.
>
> Is this idea feasible, do you think?
>
>
> Thanks ...
>
> Richard
>
> PS Originally posted in
> https://intellij-support.jetbrains.com/hc/en-us/community/posts/207286145--Hungarian-Notation-and-type-checking
>
>
>
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-- 
--Guido van Rossum (python.org/~guido)
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