Python pip install pywin32

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Releases: mhammond/pywin32

Release 306

.exe installers are now deprecated, but while they still exist, you must choose both the correct Python version and «bittedness». Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

There is one binary per-version, per-bittedness. To determine what version of Python you have, start Python and look at the first line of the banner. Compare these 2:

Python 2.7.2+ . [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2+ . [MSC v.1500 64 bit (AMD64)] on win32 ^^^^^^^^^^^^^^ 

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

But as above: .exe installers are deprecated — please use pip.

Release 305

.exe installers are now deprecated, but while they still exist, you must choose both the correct Python version and «bittedness». Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

There is one binary per-version, per-bittedness. To determine what version of Python you have, start Python and look at the first line of the banner. Compare these 2:

Python 2.7.2+ . [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2+ . [MSC v.1500 64 bit (AMD64)] on win32 ^^^^^^^^^^^^^^ 

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

But as above: .exe installers are deprecated — please use pip.

Release 304

If you use pip: pip install pywin32 —upgrade

A number of things don’t work via pip, so you may choose to install binaries — but you must choose both the correct Python version and «bittedness». Note that due to changes in Python there are no binary installers for version 3.10 32bit and later, so pypi is your only option there.

Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

There is one binary per-version, per-bittedness. To determine what version of Python you have, start Python and look at the first line of the banner. Compare these 2:

Python 2.7.2+ . [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2+ . [MSC v.1500 64 bit (AMD64)] on win32 ^^^^^^^^^^^^^^ 

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

Release 303

If you use pip: pip install pywin32 —upgrade

A number of things don’t work via pip, so you may choose to install binaries — but you must choose both the correct Python version and «bittedness». Note that due to changes in Python there are no binary installers for version 3.10 32bit, so pypi is your only option there.

Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

There is one binary per-version, per-bittedness. To determine what version of Python you have, start Python and look at the first line of the banner. Compare these 2:

Python 2.7.2+ . [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2+ . [MSC v.1500 64 bit (AMD64)] on win32 ^^^^^^^^^^^^^^ 

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

Release 302

If you use pip: pip install pywin32 —upgrade

A number of things don’t work via pip, so you may choose to install binaries — but you must choose both the correct Python version and «bittedness».

Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

There is one binary per-version, per-bittedness. To determine what version of Python you have, start Python and look at the first line of the banner. Compare these 2:

Python 2.7.2+ . [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2+ . [MSC v.1500 64 bit (AMD64)] on win32 ^^^^^^^^^^^^^^ 

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

Release 301

If you use pip: pip install pywin32 —upgrade

A number of things don’t work via pip, so you may choose to install binaries — but you must choose both the correct Python version and «bittedness».

Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

There is one binary per-version, per-bittedness. To determine what version of Python you have, start Python and look at the first line of the banner. Compare these 2:

Python 2.7.2+ . [MSC v.1500 32 bit (Intel)] on win32 Python 2.7.2+ . [MSC v.1500 64 bit (AMD64)] on win32 ^^^^^^^^^^^^^^ 

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

Release 300

This is the first release to support only Python 3.5 and up — Python 2 is no longer supported. To celebrate, the build numbers have jumped to 300! There were significant changes in this release — you are encouraged to read CHANGES.txt carefully.

To download pywin32 binaries you must choose both the correct Python version and «bittedness».

Note that there is one download package for each supported version of Python — please check what version of Python you have installed and download the corresponding package.

Some packages have a 32bit and a 64bit version available — you must download the one which corresponds to the Python you have installed. Even if you have a 64bit computer, if you installed a 32bit version of Python you must install the 32bit version of pywin32.

To determine what version of Python you have, just start Python and look at the first line of the banner. A 32bit build will look something like

Python 3.8.1+ . [MSC v.1913 32 bit (Intel)] on win32

While a 64bit build will look something like:

Python 3.8.1+ . [MSC v.1913 64 bit (AMD64)] on win32

If the installation process informs you that Python is not found in the registry, it almost certainly means you have downloaded the wrong version — either for the wrong version of Python, or the wrong «bittedness».

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Python for Windows (pywin32) Extensions

mhammond/pywin32

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README.md

This is the readme for the Python for Win32 (pywin32) extensions, which provides access to many of the Windows APIs from Python.

See CHANGES.txt for recent notable changes.

The docs are a long and sad story, but there’s now an online version of the helpfile that ships with the installers (thanks @ofek!). Lots of that is very old, but some is auto-generated and current. Would love help untangling the docs!

Feel free to open issues for all bugs (or suspected bugs) in pywin32. pull-requests for all bugs or features are also welcome.

However, please do not open github issues for general support requests, or for problems or questions using the modules in this package — they will be closed. For such issues, please email the python-win32 mailing list — note that you must be subscribed to the list before posting.

You should install pywin32 via pip — eg,

python -m pip install —upgrade pywin32

There is a post-install script (see below) which should not be run inside virtual environments; it should only be run in «global» installs.

For unreleased changes, you can download builds made by github actions — choose any «workflow» from the main branch and download its «artifacts»)

Outside of a virtual environment you might want to install COM objects, services, etc. You can do this by executing:

python Scripts/pywin32_postinstall.py -install

From the root of your Python installation.

If you do this with normal permissions it will be global for your user (a few files will be copied to the root of your Python install and some changes made to HKCU). If you execute this from an elevated process, it will be global for the machine (files will be copied to System32, HKLM will be changed, etc)

Running as a Windows Service

To run as a service, you probably want to install pywin32 globally from an elevated command prompt — see above.

You also need to ensure Python is installed in a location where the user running the service has access to the installation and is able to load pywintypesXX.dll and pythonXX.dll . In particular, the LocalSystem account typically will not have access to your local %USER% directory structure.

If you encounter any problems when upgrading like the following:

The specified procedure could not be found Entry-point not found 

It usually means one of 2 things:

You’ve upgraded an install where the post-install script has previously run. So you should run it again:

• Run the «post_install» script documented above.
• Otherwise, find and remove all other copies of pywintypesXX.dll and pythoncomXX.dll (where XX is the Python version — eg, «39»)

Install Visual Studio 2019 (later probably works, but options might be different), select «Desktop Development with C++», then the following options:

• Windows 10 SDK (latest offered I guess? At time of writing, 10.0.18362)
• «C++ for MFC for . «
• ARM build tools if necessary.

(the free compilers probably work too, but haven’t been tested — let me know your experiences!)

setup.py is a standard distutils build script, so you probably want:

Some modules need obscure SDKs to build — setup.py should succeed, gracefully telling you why it failed to build them — if the build actually fails with your configuration, please open an issue.

The following steps are performed when making a new release — this is mainly to form a checklist so mhammond doesn’t forget what to do 🙂

• Ensure CHANGES.txt has everything worth noting. Update the header to reflect the about-to-be released build and date, commit it.
• Update setup.py with the new build number.
• Execute make.bat , wait forever, test the artifacts.
• Upload .whl artifacts to pypi — we do this before pushing the tag because they might be rejected for an invalid README.md . Done via py -3.? -m twine upload dist/*XXX*.whl .
• Commit setup.py (so the new build number is in the repo), create a new git tag
• Upload the .exe installers to github.
• Update setup.py with the new build number + «.1» (eg, 123.1), to ensure future test builds aren’t mistaken for the real release.
• Make sure everything is pushed to github, including the tag (ie, git push —tags )
• Send mail to python-win32

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Python for Windows (pywin32) Extensions

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