How does Distutils manage to use these libraries with their changed names? In that case, the temp.plat directory holds temporary files generated by the compile/link process that don't actually get installed. It turns out this is a really bad idea, as using such a name means the Python interpreter can no longer find the real socket module in the standard library, as The module cache¶ The first place checked during import search is sys.modules. this content
return os.path.join(self.path_entry, fullname) def get_source(self, fullname): print 'loading source for "%s" from shelf' % fullname try: with shelve_context(self.path_entry) as db: key_name = _get_key_name(fullname, db) if key_name: return db[key_name] raise ImportError('could not The Python Software Foundation is a non-profit corporation. This was referenced Apr 14, 2016 Closed Integrate mypy in Travis CI zulip/zulip#639 Open Several issues with files named `typing.py` #1876 Sign up for free to join this conversation on The meta path¶ When the named module is not found in sys.modules, Python next searches sys.meta_path, which contains a list of meta path finder objects.
copy from PEP 395). 5.9. Table Of Contents 5. Here is an approximation of what happens during the loading portion of import: module = None if spec.loader is not None and hasattr(spec.loader, 'create_module'): # It is assumed 'exec_module' will also Each missing directory is associated with an imp.NullImporter instance, since modules cannot be imported from directories that do not exist.
By contrast, path entry finders are in a sense an implementation detail of the path based finder, and in fact, if the path based finder were to be removed from .c are assumed to be written in C, filenames ending in .C, .cc, and .c++ are assumed to be C++, and filenames ending in
When you open Python again, you're back to the same old list. Python Cannot Find Module In Same Directory Obviously, specifying the entire installation scheme every time you install a new module distribution would be very tedious. home_dir = os.path.expanduser("~") my_module_file = os.path.join(home_dir, "hi.py") with open(my_module_file, 'w') as f: f.write('print "hi"\n') f.write('a=10\n') # Add the home directory to sys.path sys.path.append(home_dir) # Now this works, and prints hi! In either case, you're creating a custom installation scheme.
Thus parent/one may not be physically located next to parent/two. Python Site-packages You're really much better off living with errors about missing modules, or using -s/--silent-imports. Is there still a way to prevent Trump from becoming president? To selectively prevent import of some modules from a hook early on the meta path (rather than disabling the standard import system entirely), it is sufficient to raise ImportError directly
These are Distutils configuration variables, which bear a strong resemblance to environment variables. http://www.bdnyc.org/2012/09/editing-pythonpath-to-import-modules/ Changed in version 3.4: find_spec() replaced find_loader() and find_module(), both of which are now deprecated, but will be used if find_spec() is not defined. Python Can't Find Module In Site-packages You can do this as follows: coff2omf python25.lib python25_bcpp.lib The coff2omf program comes with the Borland compiler. Python Cannot Find Installed Module For example, your site may have a convention of keeping all software related to the web server under /www.
To fix this: I'm assuming that your script.py is an entry point for your src module (for example, maybe it's the main program). news Someone peeled an American flag sticker off of my truck. great help... Building Extensions: Tips and Tricks¶ Whenever possible, the Distutils try to use the configuration information made available by the Python interpreter used to run the setup.py script. Python Library Path Linux
Debugging the setup script may also be of interest. They instead use a custom iterable type which will automatically perform a new search for package portions on the next import attempt within that package if the path of their parent If not, put one in and try again — that could cause the problem you're seeing. have a peek at these guys the loader) is None, this means that while the path entry finder does not have a loader for the named module, it knows that the path entry contributes to a
In this way, the expensive search for a particular path entry location's path entry finder need only be done once. Change Pythonpath Skip to content Ignore Learn more Please note that GitHub no longer supports old versions of Firefox. Path entry finder protocol¶ In order to support imports of modules and initialized packages and also to contribute portions to namespace packages, path entry finders must implement the find_spec() method.
These strategies can be modified and extended by using various hooks described in the sections below. After the module is created but before execution, the import machinery sets the import-related module attributes ("_init_module_attrs" in the pseudo-code example above), as summarized in a later section. Non-package modules should not have a __path__ attribute. __file__¶ __cached__¶ __file__ is optional. Python Pythonpath GNU C / Cygwin / MinGW¶ This section describes the necessary steps to use Distutils with the GNU C/C++ compilers in their Cygwin and MinGW distributions.  For a Python interpreter
Any other exceptions raised are simply propagated up, aborting the import process. How do I avoid referring to all state variables when updating only a few? Footnotes See types.ModuleType. The importlib implementation avoids using the return value directly. http://amigasuperbit.com/python-cannot/python-cannot-find-site-module.html Tweaking compiler/linker flags¶ Compiling a Python extension written in C or C++ will sometimes require specifying custom flags for the compiler and linker in order to use a particular library or
If any of the intermediate imports fail, an ImportError is raised. 5.3.1. The meta path may be traversed multiple times for a single import request. Loaders must satisfy the following requirements: If the module is a Python module (as opposed to a built-in module or a dynamically loaded extension), the loader should execute the module's code There is no longer any implicit import machinery - the full import system is exposed through sys.meta_path.
In those versions, the interpreter makes a distinction between standalone bytecode files (such as socket.pyc above) and cached bytecode files (stored in automatically created __pycache__ directories). When I run the .py file I get the 'No Module' error for the widget. Location and names of config files¶ The names and locations of the configuration files vary slightly across platforms. not found Failed to import: No module named module3 Package Data¶ In addition to defining the API loading executable Python code, PEP 302 defines an optional API for retrieving package data
For a long time, the only way to get sys.path right with this kind of setup was to either set it manually in test_foo.py itself (hardly something novice, or This test prevents the NoisyImportFinder from breaking imports of real modules. $ python sys_path_hooks_noisy.py Checking NoisyImportFinder support for NoisyImportFinder_PATH_TRIGGER NoisyImportFinder looking for "target_module" Checking NoisyImportFinder support for /Users/dhellmann/Documents/PyMOTW/src/PyMOTW/sys NoisyImportFinder does not Ubuntu Python Now back to the issue of missing packages after installing a new version of Python compiled from source. Regular packages are traditional packages as they existed in Python 3.2 and earlier.
For top-level modules, the second argument is None, but for submodules or subpackages, the second argument is the value of the parent package's __path__ attribute. pexports python25.dll >python25.def The location of an installed python25.dll will depend on the installation options and the version and language of Windows. For example, the module developer might make an executable installer available for Windows users, an RPM package for users of RPM-based Linux systems (Red Hat, SuSE, Mandrake, and many others), a The --home option defines the installation base directory.
asked 2 years ago viewed 20405 times active 2 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 269 Should I put #! (shebang) in Python scripts, and The key can also be assigned to None, forcing the next import of the module to result in an ImportError. In the case it doesn't find such a special library it uses the default name (foo.lib.)  To let Distutils compile your extension with Borland C++ you now have to Join them; it only takes a minute: Sign up Python can't find my module up vote 3 down vote favorite I have a python project (which I run within a virtualenv)