I'm going to note here that it is perfectly reasonable to use Python as a
"scripting language" -- to, you know, write scripts.

And when I'm writing scripts, I make heavy use of the global namespace :-)

Granted, if it's really a quick and dirty script, I'll not bother with if
__name__ == "__main__" at all, but there is a middle ground, where I do.

There's no need to restrict Python to be more structured in this manner.

-CHB



On Thu, May 28, 2020 at 12:52 PM David Mertz <[email protected]> wrote:

> On Thu, May 28, 2020, 3:06 PM Chris Angelico <[email protected]> wrote:
>
>> There aren't multiple entry points, though. There would be multiple
>> blocks of code that are skipped if the module is imported, but
>> executed if it's run as a script. Remember, Python code is NOT
>> declarative. That 'def' statement is an actual executable bit of code.
>>
>
> I take back my comment. I think I may have used the multiple __main__
> blocks occasionally, for reasons Chris notes. Like I want something
> configured BEFORE a function is defined (maybe a global that only makes
> sense when run as script).
>
> However, I haven't done it for a long while. I think when I was younger I
> didn't value encapsulation sufficiently. That said, I don't want the
> capability to change. There are lots of things I don't do stylistically,
> but I don't want striken from the language.
>
>
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-- 
Christopher Barker, PhD

Python Language Consulting
  - Teaching
  - Scientific Software Development
  - Desktop GUI and Web Development
  - wxPython, numpy, scipy, Cython
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