Do Python libraries need a ersion number?

[Hal Murray]

esr at thyrsus.com said:
> If you look in the library Python directories you will see that this is not
> done.  It would make writing imports a problem, as "ntp-1.0" is not parsed
> as a single token in Python. 

So we have to use things like ntp, ntp2, ...  ?

Do Python libraries get used by other projects?  (as compared to the project 
that installs them)  How do they change the API?


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