`!zipimport` --- Import modules from Zip archives
zipimport
Source code: Lib/zipimport.py
This module adds the ability to import Python modules (\*.py, \*.pyc) and packages from ZIP-format archives. It is usually not needed to use the !zipimport module explicitly; it is automatically used by the built-in import mechanism for sys.path items that are paths to ZIP archives.
Typically, sys.path is a list of directory names as strings. This module also allows an item of sys.path to be a string naming a ZIP file archive. The ZIP archive can contain a subdirectory structure to support package imports, and a path within the archive can be specified to only import from a subdirectory. For example, the path example.zip/lib/ would only import from the lib/ subdirectory within the archive.
Any files may be present in the ZIP archive, but importers are only invoked for .py and .pyc files. ZIP import of dynamic modules (.pyd, .so) is disallowed. Note that if an archive only contains .py files, Python will not attempt to modify the archive by adding the corresponding .pyc file, meaning that if a ZIP archive doesn't contain .pyc files, importing may be rather slow.
3.15 Zstandard (zstd) compressed zip file entries are supported.
3.13 ZIP64 is supported
3.8 Previously, ZIP archives with an archive comment were not supported.
PKZIP Application Note
Documentation on the ZIP file format by Phil Katz, the creator of the format and algorithms used.
273 - Import Modules from Zip Archives
Written by James C. Ahlstrom, who also provided an implementation. Python 2.3 follows the specification in 273, but uses an implementation written by Just van Rossum that uses the import hooks described in 302.
importlib - The implementation of the import machinery
Package providing the relevant protocols for all importers to implement.
This module defines an exception:
ZipImportError
Exception raised by zipimporter objects. It's a subclass of ImportError, so it can be caught as ImportError, too.
zipimporter Objects
zipimporter is the class for importing ZIP files.
Create a new zipimporter instance. archivepath must be a path to a ZIP file, or to a specific path within a ZIP file. For example, an archivepath of foo/bar.zip/lib will look for modules in the lib directory inside the ZIP file foo/bar.zip (provided that it exists).
ZipImportError is raised if archivepath doesn't point to a valid ZIP archive.
3.12
Methods find_loader() and find_module(), deprecated in 3.10 are now removed. Use find_spec instead.
create_module(spec)
Implementation of importlib.abc.Loader.create_module that returns None to explicitly request the default semantics.
3.10
exec_module(module)
Implementation of importlib.abc.Loader.exec_module.
3.10
find_spec(fullname, target=None)
An implementation of importlib.abc.PathEntryFinder.find_spec.
3.10
get_code(fullname)
Return the code object for the specified module. Raise ZipImportError if the module couldn't be imported.
get_data(pathname)
Return the data associated with pathname. Raise OSError if the file wasn't found.
3.3 IOError used to be raised, it is now an alias of OSError.
get_filename(fullname)
Return the value __file__ would be set to if the specified module was imported. Raise ZipImportError if the module couldn't be found.
3.1
get_source(fullname)
Return the source code for the specified module. Raise ZipImportError if the module couldn't be found, return None if the archive does contain the module, but has no source for it.
is_package(fullname)
Return True if the module specified by fullname is a package. Raise ZipImportError if the module couldn't be found.
invalidate_caches()
Clear out the internal cache of information about files found within the ZIP archive.
3.10
archive
The file name of the importer's associated ZIP file, without a possible subpath.
prefix
The subpath within the ZIP file where modules are searched. This is the empty string for zipimporter objects which point to the root of the ZIP file.
The archive and prefix attributes, when combined with a slash, equal the original archivepath argument given to the zipimporter constructor.
Examples
Here is an example that imports a module from a ZIP archive - note that the !zipimport module is not explicitly used.
$ unzip -l example_archive.zip
Archive: example_archive.zip
Length Date Time Name
-------- ---- ---- ----
8467 01-01-00 12:30 example.py
-------- -------
8467 1 file
>>> import sys
>>> # Add the archive to the front of the module search path
>>> sys.path.insert(0, 'example_archive.zip')
>>> import example
>>> example.__file__
'example_archive.zip/example.py'
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