Question on making names visible in packages

[Kenneth McDonald]

This will have an easy answer, no doubt, unfortunately I can't
think of it...

I'm writing a package which will have a number of classes. I'd
like to split them amongst different files within the package.
However, I'd also like the package user to be able to say:

import Package

and then to use the classes as

Package.Class1, Package.Class2, etc.

However, I'm only able to get this behavior when I leave the
class definitions in the __init__.py file. When in other files,
they of course have to be referenced as :

Package.filename.Class1

Is there some way of making the names visible at the top level
of the module, to mask the fact that they are split amongst
different files within the package? The split reflects a
logical organization of the code from the point of view of
the designer of the package, but not from the user, and
so I don't want the user to necessarily be aware of the
file organization. (If they want to be, hey, that's fine...)
Thanks,
Ken McDonald

[Sean Ross]

"Kenneth McDonald" <km********@wisc.edu> wrote in message
news:sl***********************@g4.gateway.2wire.ne t...
[snip]

import Package

and then to use the classes as

Package.Class1, Package.Class2, etc.

However, I'm only able to get this behavior when I leave the
class definitions in the __init__.py file. When in other files,
they of course have to be referenced as :

Package.filename.Class1

Is there some way of making the names visible at the top level
of the module, to mask the fact that they are split amongst
different files within the package?

[snip]

In your __init__.py you can add :

from filename import Class1

to make the names visible at the top-level.

HTH
Sean

[Roger Binns]

> However, I'm only able to get this behavior when I leave the

class definitions in the __init__.py file. When in other files,
they of course have to be referenced as :

Make your init.py be like this:

from filename1 import *
from filename2 import *
from filename3 import *

If you don't want lots of namespace pollution, you can import
only the symbols you want to export in the package namespace.

Roger

[Mark McEahern]

Kenneth McDonald wrote:

I'm writing a package which will have a number of classes. I'd
like to split them amongst different files within the package.
However, I'd also like the package user to be able to say:

import Package

and then to use the classes as

Package.Class1, Package.Class2, etc.

Example:

D:\BUFFER\Package
bar.py
foo.py
__init__.py

bar defines class Bar; foo defines class Foo.

__init__.py looks like this:

from bar import Bar
from foo import Foo

Now, I can:

import Package
f = Package.Foo()

If the contents of Package are volatile, you could even use os, glob,
and __import__ to make the from x import y entirely dynamic.

// m