Learning why module will not load

[Terry Reedy]

On 12/29/2020 1:11 PM, Rich Shepard wrote:
> Running Slackware-14.2/x86_64 and python-3.9.1. Installed are
> six-1.14.0-x86_64-1_SBo and python3-six-1.13.0-x86_64-1_SBo (I don't 
> know if
> the latter is required because six is supposed to be available for python2
> and python3.)

Packages have to be installed for a particular Python binary in order 
for that binary to import the package.

> However, python3 doesn't find either one:
> 
> $ python3
> Python 3.9.1 (default, Dec 26 2020, 11:21:00) [GCC 5.5.0] on linux
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import six
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
> ModuleNotFoundError: No module named 'six'
>>>> import python3_six
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
> ModuleNotFoundError: No module named 'python3_six'
> 
> How do I diagnose why neither module is found?

Those packages apparently are not installed for that 3.9.1 binary.


-- 
Terry Jan Reedy