Sourced from pywin32's releases.

Release 301

The changes

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".

Release 228

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 2.7.2+ ... [MSC v.1500 32 bit (Intel)] on win32

While a 64bit build will look something like:

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

... (truncated)

Sourced from pywin32's changelog.

Build 301, released 2021-05-30

• Fix some confusion on how dynamic COM object properties work. The old code was confused, so there's a chance there will be some subtle regression here - please open a bug if you find anything, but this should fix #1427.

• COM objects are now registered with the full path to pythoncomXX.dll, fixes #1704.

• Creating a win32crypt.CRYPT_ATTRIBUTE object now correctly sets cbData.

• Add wrap and unwrap operations defined in the GSSAPI to the sspi module and enhance the examples given in this module. (#1692, Emmanuel Coirier)

• Fix a bug in win32profile.GetEnvironmentStrings() relating to environment variables with an equals sign (@​maxim-krikun in #1661)

• Fixed a bug where certain COM dates would fail to be converted to a Python datetime object with ValueError: microsecond must be in 0..999999. Shoutout to @​hujiaxing for reporting and helping reproduce the issue (#1655)

• Added win32com.shell.SHGetKnownFolderPath() and related constants.

• CoClass objects should work better with special methods like len etc. (#1699)

• Shifted work in win32.lib.pywin32_bootstrap to Python's import system from manual path manipulations (@​wkschwartz in #1651)

• Fixed a bug where win32print.DeviceCapabilities would return strings containing the null character followed by junk characters. (#1654, #1660, Lincoln Puzey)

Build 300, released 2020-11-14

• Fixed a bug where win32com.client.VARIANT params were returned in the reverse order. This only happened when win32com.client.VARIANT was explicitly used (ie, not when normal params were passed) For example:

      arg1 = VARIANT(pythoncom.VT_R4 | pythoncom.VT_BYREF, 2.0)
      arg2 = VARIANT(pythoncom.VT_BOOL | pythoncom.VT_BYREF, True)
      object.SomeFunction(arg1, arg2)

  after this call, arg1.value was actually the value for arg2, and vice-versa (#1303, #622).

• Fixed a bug that Pythonwin had an empty sys.argv (@​kxrob in #1607)

... (truncated)

• See full diff in compare view

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