boris ha scritto:
> I have two directories, lib1 and lib2, that both contain the package
> foo, one with the submodule mod1
> and the other with the submodule mod2:
> [...]
> Now this script:
>
> import sys
> sys.path.append("lib1")
> sys.path.append("lib2")
> import foo.mod1
>
> will find the module foo.mod1, while the same script with the two
> append-lines interchanged will not:
>
> import sys
> sys.path.append("lib2")
> sys.path.append("lib1")
> import foo.mod1
>
> The error is:
>
> import foo.mod1
> ImportError: No module named mod1
> [...]
You just have to put in "__init__.py" in "lib2" (the package directory
you are "extending"), the following lines:
from pkgutil import extend_path
__path__ = extend_path(__path__, __name__)
"__path__", in each __init__ module, is a list initialized with the
module's path, but you can extend it by appending paths where you want
the interpreter to look for further modules.
pkgutil.extend_path automatically appends to __path__ all subdirectories
of directories on sys.path named after the package.
HTH :-)
Diego.
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