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Python Cannot Find Module In Site-packages
The name shadowing trap¶ Another common trap, especially for beginners, is using a local module name that shadows the name of a standard library or third party package or module that However, it is also useful in that it makes it possible to explicitly declare that a package is closed to additional contributions. found i t as package.__init__ loading source for "package" from shelf creating a new module object for "package" adding path for package execing source... 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 have a peek here
Skip to content Ignore Learn more Please note that GitHub no longer supports old versions of Firefox. However, even if there are improvements in this area in future versions of Python (see PEP 395), this trap will still exist in all current versions. Linked 0 How to Import a class from a different folder in python? The import system 5.1. importlib 5.2.
Python Cannot Find Module In Site-packages
One particularly surprising way to run afoul of this trap is by using such a name for a script, as this then combines with the previous "executing the main module twice" Navigation index modules | next | previous | PyMOTW » Python Runtime Services » sys - System-specific Configuration » Modules and Imports¶ Most Python programs end up as a combination of What happens when a wizard tries to cast a cone of cold through a wall of fire?
What legal documents are Italian citizens supposed to carry when traveling to Ireland? import sys import os base_dir = os.path.dirname(__file__) or '.' print 'Base directory:', base_dir # Insert the package_dir_a directory at the front of the path. The __init__.py file in the kernels directory contains the following line: from .rbf import * Now the demo1.py contains the following import: from kernels import RBF However, this fails with ImportError: How To Add To Pythonpath The difference is that the meta-finder is not limited to a single entry in sys.path, it can search anywhere at all.
Here I am having an issue where I have definitely installed mechanize both on my machine and in various virtual environments. Python Cannot Find Installed Module This attribute is used instead of __name__ to calculate explicit relative imports for main modules, as defined in PEP 366. __spec__¶ The __spec__ attribute must be set to the Once you've loaded python or ipython, they don't know or care about $PYTHONPATH, just whatever was set in sys.path. 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.
I'm not entirely sure what I'm supposed to do in order to use mypy with a venv in general, which is I think what #1339 is about, but perhaps the mypy How To Check Pythonpath package imported done looking for "package.module1" in /tmp/pymotw_import_example.shelve ... UPDATE: even better, use python -m pip install . Some meta path finders only support top level imports.
Python Cannot Find Installed Module
Could you check sys.path to see if you're looking in the right places, ls -laR /usr/local/lib/python2.7/dist-packages/mech*to check for permissions trouble, and look at imp.find_module("mechanize") to distinguish between can't-find-it and can't-survive-importing-it errors? http://www.bdnyc.org/2012/09/editing-pythonpath-to-import-modules/ The latter will be ignored by the interpreter if the corresponding source file is missing, so the above renaming of the source file works as intended: $ echo 'from socket import Python Cannot Find Module In Site-packages The first is the fully qualified name of the module being imported, for example foo.bar.baz. Python Can't Find Module In Current Directory Replacing the standard import system 5.7.
An ImportError is used by the path based finder to signal that the hook cannot find a path entry finder for that path entry. navigate here package imported done Import Errors¶ When a module cannot be located by any finder, ImportError is raised by the main import code. They explain how the Debian distribution of Python is different. For the purposes of this documentation, we'll use this convenient analogy of directories and files. Edit Pythonpath
module.__path__¶ By definition, if a module has an __path__ attribute, it is a package, regardless of its value. When calling __import__() as part of an import statement, the standard builtin __import__() is called. In order to import any module, it must either be located in a directory that's listed in sys.path, or, in the same directory as the script that you're running. Check This Out Related 357Retrieving python module path264How do I find the location of Python module sources?412How do I unload (reload) a Python module?201Importing modules from parent folder540How can I get a list of
found prefix, returning loader' return NoisyMetaImportLoader(path) else: print ' ... Python Import Module In Same Directory A package's __init__.py file may set or alter the package's __path__ attribute, and this was typically the way namespace packages were implemented prior to PEP 420. Finders¶ Custom importers are implemented in two separate phases.
If it is acceptable to only alter the behaviour of import statements without affecting other APIs that access the import system, then replacing the builtin __import__() function may be sufficient.
This particular trap has been largely eliminated in Python 3.2 and later. On import, each part of the path is given to a finder until one claims support (by not raising ImportError). Beware though, as if you keep a reference to the module object, invalidate its cache entry in sys.modules, and then re-import the named module, the two module objects will not Pythonpath Windows Comments powered by Disqus Next Previous © Copyright 2011, Nick Coghlan.
Changed in version 3.4: The find_spec() method of meta path finders replaced find_module(), which is now deprecated. The current working directory - denoted by an empty string - is handled slightly differently from other entries on sys.path. In particular, meta path finders operate at the beginning of the import process, as keyed off the sys.meta_path traversal. http://cluefest.com/python-cannot/python-mro.html If others confirm this cause, may want to amend the answer accordingly? –Brandyn Mar 9 '15 at 3:30 Adding to jozxyqk comment's: make sure you got the right directory
Path entry finders¶ The path based finder is responsible for finding and loading Python modules and packages whose location is specified with a string path entry. Finders and loaders 5.3.3. package imported done looking for data in /tmp/pymotw_import_example.shelve for "/tmp/pymotw _import_example.shelve/README" ============== package README ============== This is the README for ``package``. A word of warning: this section and the previous both use the term finder, distinguishing between them by using the terms meta path finder and path entry finder.
First, if the current working directory is found to not exist, no value is stored in sys.path_importer_cache. During import, the module name is looked up in sys.modules and if present, the associated value is the module satisfying the import, and the process completes. A guy scammed me, but he gave me a bank account number & routing number. How can I take a powerful plot item away from players without frustrating them?
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