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Annotation of /branches/RW_WIN32/esys/py_src/SConscript

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Revision 232 - (hide annotations)
Fri Nov 25 09:59:48 2005 UTC (14 years, 8 months ago) by phornby
File size: 278 byte(s)
1) Rob, could you please set up your editor to not put CR's into the files.
2) The import esys.bruce fails on Linux, but the rest seems OK.

Here is how things go.

If a directory (bruce say) contains an __init__.py, then import esys.bruce actually imports
the __init__.py file. One can either phoney up the namespace by then saying

from bruce import *

in __init__.py (ugly!!) or just rename bruce.py to __init__.py.

All the sub-packages need this treatment. I suggest doing it with the .py files in the
source tree rather than re-naming at build time. Any other modules in the sub-directory
can then be imported into the __init__.py in the usual way in order to make them visible
to the user. Alternatively, any module not imported to __init__.py is invisible to the user.
This is much better than mucking with PYTHON_PATH and LD_LIBRARY_PATH, which has a tendency
to make everything visible, and creates module name clashes in site-packages on occasions. 
The .so associated with a sub-directory should reside with the corresponding __init__.py
that imports it.

Careful use of "from AClass import AClass" and "from ASharedLib import *" in __init__.py
is also a good method of making classes contained in submodules
look like they are in the namespace of the __init__.py, thereby hiding
the intervening module name from the user. That way esys.bruce.AClass.AClass can be morphed
into esys.bruce.AClass, eliminating the annoying intervening module namespace.

1 robwdcock 229 Import('*')
2 phornby 232
3     local_env=env.Copy()
5 robwdcock 229 src_dir = local_env.Dir('.').srcnode().abspath
7 phornby 232 import os
8     filenames = os.listdir(src_dir)
9 robwdcock 229 python_src = [x for x in filenames if os.path.splitext(x)[1] in ['.py']]
10 phornby 232
11     pyc = local_env.PyCompile(python_src)
12     local_env.Install(esys_lib+'/esys', pyc)

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