Testing the availability of a module

[Kevin Yuan]

2005/12/19, Bo Peng <bpeng at rice.edu>:
>
> Dear list,
>
> Is there a better way than doing
>
> try:
>    import aModule
> except:
>    has_aModule = False
> else:
>    has_aModule = True
>
> The main concern here is that loading aModule is unnecessary (and may
> take time).
>
> If loading aModule is unnecessary, the best way is not loading it atall.
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