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Posting warning message

On 2018-06-11 16:54, Tamara Berger wrote:
> I did subscribe to the mailing list, but it opened the floodgates to a
> torrent of irrelevant emails. I didn't know how to turn the flood off,
> so I unsubscribed. How do I set the appropriate option?
> I was just going to post another message to google groups. If you
> don't mind, I'll ask you now.
> I got an error message when trying to install pytest. Following the
> workbook, I typed these 2 lines in the terminal:
> Last login: Mon Jun 11 11:07:46 on ttys000
> 192:~ TamaraB$ sudo python3
> Password:
> Python 3.6.4 (v3.6.4:d48ecebad5, Dec 18 2017, 21:07:28)
> [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
>>>> python3 -m pip install pytest
>    File "<stdin>", line 1
>      python3 -m pip install pytest
>                   ^
> SyntaxError: invalid syntax

That should've been typed at the system's prompt, not Python's.

> I know you warned against using the sudo command, but Apple supports using it.
> What does the "-m" stand for in the line of code?