diff -r 000000000000 -r ae805ac0140d python-2.5.2/win32/Lib/runpy.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/python-2.5.2/win32/Lib/runpy.py Fri Apr 03 17:19:34 2009 +0100 @@ -0,0 +1,104 @@ +"""runpy.py - locating and running Python code using the module namespace + +Provides support for locating and running Python scripts using the Python +module namespace instead of the native filesystem. + +This allows Python code to play nicely with non-filesystem based PEP 302 +importers when locating support scripts as well as when importing modules. +""" +# Written by Nick Coghlan +# to implement PEP 338 (Executing Modules as Scripts) + +import sys +import imp +try: + from imp import get_loader +except ImportError: + from pkgutil import get_loader + +__all__ = [ + "run_module", +] + + +def _run_code(code, run_globals, init_globals, + mod_name, mod_fname, mod_loader): + """Helper for _run_module_code""" + if init_globals is not None: + run_globals.update(init_globals) + run_globals.update(__name__ = mod_name, + __file__ = mod_fname, + __loader__ = mod_loader) + exec code in run_globals + return run_globals + +def _run_module_code(code, init_globals=None, + mod_name=None, mod_fname=None, + mod_loader=None, alter_sys=False): + """Helper for run_module""" + # Set up the top level namespace dictionary + if alter_sys: + # Modify sys.argv[0] and sys.module[mod_name] + temp_module = imp.new_module(mod_name) + mod_globals = temp_module.__dict__ + saved_argv0 = sys.argv[0] + restore_module = mod_name in sys.modules + if restore_module: + saved_module = sys.modules[mod_name] + sys.argv[0] = mod_fname + sys.modules[mod_name] = temp_module + try: + _run_code(code, mod_globals, init_globals, + mod_name, mod_fname, mod_loader) + finally: + sys.argv[0] = saved_argv0 + if restore_module: + sys.modules[mod_name] = saved_module + else: + del sys.modules[mod_name] + # Copy the globals of the temporary module, as they + # may be cleared when the temporary module goes away + return mod_globals.copy() + else: + # Leave the sys module alone + return _run_code(code, {}, init_globals, + mod_name, mod_fname, mod_loader) + + +# This helper is needed due to a missing component in the PEP 302 +# loader protocol (specifically, "get_filename" is non-standard) +def _get_filename(loader, mod_name): + try: + get_filename = loader.get_filename + except AttributeError: + return None + else: + return get_filename(mod_name) + + +def run_module(mod_name, init_globals=None, + run_name=None, alter_sys=False): + """Execute a module's code without importing it + + Returns the resulting top level namespace dictionary + """ + loader = get_loader(mod_name) + if loader is None: + raise ImportError("No module named " + mod_name) + code = loader.get_code(mod_name) + if code is None: + raise ImportError("No code object available for " + mod_name) + filename = _get_filename(loader, mod_name) + if run_name is None: + run_name = mod_name + return _run_module_code(code, init_globals, run_name, + filename, loader, alter_sys) + + +if __name__ == "__main__": + # Run the module specified as the next command line argument + if len(sys.argv) < 2: + print >> sys.stderr, "No module specified for execution" + else: + del sys.argv[0] # Make the requested module sys.argv[0] + run_module(sys.argv[0], run_name="__main__", alter_sys=True)