[Zope3-dev] Re: __init__.py interfaces.py guidelines?

[Tres Seaver]

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Jean-Marc Orliaguet wrote:
> 
> There is another place where there seems to be two different patterns too:
> 
> sometimes we have:
> 
>   import zope.schema
>   name = zope.schema.TextLine(...)
> 
> and sometimes:
> 
>   from zope.schema import TextLine
>   name = TextLine(...)
> 
> any reason to use one or the other (speed, verbosity, avoiding circular
> imports, ...) ?

I vastly prefer the second:  it keeps the use points clearer, while
still making the source clear (the "*" key in my editor makes a great
way to find the import statement).

It is also ever-so-slightly faster, as it avoids a name lookup at
point-of-use.  That optimization is the source of only downside of the
practice:  it makes monkey-patching harder, because the original binding
gets copied.


Tres.
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Tres Seaver          +1 202-558-7113          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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