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How to import win32api module in python? [duplicate]

When running python26 under windows OS (64bits).....
I have got errors like:
import win32api" error in Python 2.6: pywintypes26.dll
or
pythoncom26.dll missing
ImportError: DLL load failed: The specified module could not be found.
I have done the msi installation for python26
all dlls can be found under C:\Python26\Lib\site-packages\pywin32_system32

After I copy pywintypes26.dll and pythoncom26.dll from C:\Python26\Lib\site-packages\pywin32_system32 to C:\Python26\Lib\site-packages\win32 -> Solve the problem!

I also hit a problem importing win32api.
The post-install script for pywin32 failed, which should copy pythoncom26.dll, pythoncomloader26.dll, and pywintypes26.dll, among other things. I ran it by hand and my installation was fixed.
python scripts\pywin32_postinstall.py -install

I had a similar problem when installing under 64 bit Python 3.4.2. I ran the install executable pywin32‑219.win‑amd64‑py3.4.exe from http://www.lfd.uci.edu/~gohlke/pythonlibs/ .
On the site it states clearly:
"Python 3.4 users must manually run python.exe Scripts\pywin32_postinstall.py -install from an elevated command prompt."
which I did not do first time round; I installed from a normal prompt getting the following feedback:
c:\python34>python.exe Scripts\pywin32_postinstall.py -install
Copied pythoncom34.dll to C:\Python34\pythoncom34.dll
Copied pywintypes34.dll to C:\Python34\pywintypes34.dll
You do not have the permissions to install COM objects.
The sample COM objects were not registered.
etc.etc.
Finishing with "The pywin32 extensions were succesfully installed" ...
I only read the last sentence and I started to run some code resulting in getting these dll load fails.
So, did some research, and started an elevated prompt (how: see "http://www.sevenforums.com/tutorials/783-elevated-command-prompt.html") and again ran:
c:\python34>python.exe Scripts\pywin32_postinstall.py -install
Copied pythoncom34.dll to C:\Windows\system32\pythoncom34.dll
Copied pywintypes34.dll to C:\Windows\system32\pywintypes34.dll
Registered: Python.Interpreter
Registered: Python.Dictionary
Registered: Python
-> Software\Python\PythonCore\3.4\Help[None]=None
-> Software\Python\PythonCore\3.4\Help\Pythonwin Reference[None]='C:\\Python34\\Lib\\site-packages\\PyWin32.chm'
Pythonwin has been registered in context menu
Shortcut for Pythonwin created
Shortcut to documentation created
The pywin32 extensions were successfully installed.
And now my code runs happily (as far as this matter is concerned... sigh, so much other stuff to do).

Run the installer as Administrator and it works:
Right click on pywin32-installer.exe
Choose "Run as Administrator"

As suggested above the post install script is not run, this issue can be seen when installing from a wheel (As I encountered)
python scripts\pywin32_postinstall.py -install
If find you have this issue when installing via wheels, then installing it from here can solve the above issue.
https://pypi.python.org/pypi/pypiwin32

There appears to be a bug in the installer. The recommended workaround in the ticket is the same one as proposed by Dave Bremer.

I could fix this situation by removing all installed Python3.4 versions (had forgotten to uninstall 3.4.1 before installing 3.4.2), deleting C:\Python34 and after installing Python 3.4.2 pywin32-219.win32-py34.exe could be installed and called without problems.
So, copying around DLLs should NOT be necessary!

I always install the Active State Python distro which installs the win32 packages for you and gets it right.

If the above didn't fix the problem, you're still missing the msvcr100.dll file. It's either in your \System32\ folder, or more likely in your c:\PythonXX\Lib\site-packages\win32\ folder.
That fixed it for me after hours of search to no avail, even though it looks like the import still isn't resolved as it should be (PyCharm still gives me the squiggly underline), but it works.

First I was using pip to install pywin32 in anaconda environment, that's why no matter what I did it was failing. After trial and error, I figured out that
conda install pywin32
is the right way to install pywin32 in the anaconda package manager.

I don't know whether it's too late or not to answer this question. I also hit this problem, and I tried every method above, but neither of them worked.
Finally, I found the reason. When we install pywin32, we must choose the one that fits python's version(2.6， 2.7， 3.3， etc) and python's bit number(x64 or x86). Notice, it must fit python's bit number, not PC's bit number. If you install x86 python in a x64 PC, you have to install a pywin32 with x86.

In my case i had to copy pywintypes26.dll and pythoncom26.dll files into C:\Windows\System32 folder to work it properly in jupyter notebook.
I am using windows 10 OS with multiple python versions

Import scip to python

I've tried unsuccessfully to get scip running with python. I'm using Yosemite (10.10.3), python 2.7 and have installed scip optimization suit (http://scip.zib.de/download.php?fname=scipoptsuite-3.1.1.tgz) with make.
I can start scip after the installation via the terminal.
sages-MBP:~ sage$ scip SCIP version 3.1.1 [precision: 8 byte] [memory: block] >[mode:optimized][LP solver: SoPlex 2.0.1] [GitHash: bade511]
But when I try to use import scip in python there appears the message
No module named scip
The same error message appears for from zibopt import scip
If I print the system path with print sys.path in python, the folder scipoptsuite-3.1.1/scip-3.1.1/bin is included where the file
scip-3.1.1.darwin.x86_64.gnu.opt.spx is situated.
Is it possible that the reason for the error message is that I haven't linked correctly necessary libraries?
Or which folders have to be included in the pythonpath to get scip working?
I Hope someone can help me out!

You need to install the python interface that comes with SCIP. Go to scip/interfaces/python/ and read the instructions in README and INSTALL. This interface is using Cython to communicate with the C-Code of SCIP.
make will only install the native Linux or Mac binaries/libraries.
The environment variable DYLD_LIBRARY_PATH needs to be set to contain the lib/ directory of the SCIPoptSuite installation (see comment by #саша)

Trouble installing scikit-bio on Windows

When attempting to install the scikit-bio toolkit via pip on Windows XP using Python 2.78 and Visual C++ 2008 Express Edition, the process is interrupted with the following message issued by VC:
cl : Command line error D8021 : invalid numeric argument '/Wno-error=declaration
-after-statement'
Concerning this error, Microsoft Developer Network website just says:
invalid numeric argument 'number'
A number greater than 65,534 was specified as a numeric argument.
I did not (yet) attempted to install scikit-bio under Linux (Ubuntu 12.04 Precise), but I am under the impression that it will work fine (as everything goes as regards Linux).
Has anyone ever succeeded installing scikit-bio under Windows (XP, 7, 8)? Any hints?
Thanks in advance!

I've installed Anaconda's Python (3.5) on a Windows 10 machine. As you should know, there is no official version of scikit-bio for this platform, but you can install it with this workaround:
Download the latest source from the Scikit-bio Github repository.
Using a tool like 7-zip, unzip it at your home directory.
Open a command line client and change to the source's directory
cd %HOMEPATH%\scikit-bio-master
Using Notepad++ edit the file setup.py
"C:\Program Files (x86)\Notepad++\notepad++" setup.py
Look for the line where the ssw_extra_compile_args variable is defined and change it. You can comment the previous version and redefine the variable in a new line:
#ssw_extra_compile_args = ['-Wno-error=declaration-after-statement']
ssw_extra_compile_args = []
Save the changes, close the editor and run the installation with this command:
python setup.py install
Hopefully you won't receive any error messages. Open an Anaconda's Python session (using the command python) and test if Scikit-Bio was installed rightly using print(skbio.art).
By the way, I've previously installed Visual Studio 2015 Community Edition with C++ SDK features enabled, in order to meet the compiler requirements for the package (Scikit-Bio) installation.

At this time, scikit-bio doesn't officially support windows. We'd definitely be interested in hearing about people's efforts to install, test, and use scikit-bio on Windows, but we don't have developers with expertise in this area.
This is related to biocore/skbio#941.

Installing Mapnik 2.2.0 in windows 7 with Python 2.7

I've been trying to install mapnik on my computer for hours but what i always get when I import mapnik is ImportError: DLL load failed: The specified procedure could not be found.
I'm using Windows 7. The currently installed software is Geoserver from Opengeo suite.
Here is my path
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\Java\jre7\bin;C:\Program Files\Java\jdk1.7.0_45\bin;C:\Python27;C:\mapnik-v2.2.0\lib
My python path:
C:\Python27;C:\Python27\Lib;C:\Python27\DLLs;C:\Python27\Lib\lib-tk;C:\Program Files\ArcGIS\bin;C:\\mapnik-v2.2.0\python\2.7\site-packages\;C:\mapnik-v2.2.0\bin\;

Follow the install instructions
First ensure you have 32 bit python 27 installed.
You can do this by typing the following into a python shell
>>> import platform
>>> platform.architecture()
('32bit', 'WindowsPE')
If you see '64bit', try reinstalling python with the 32bit version (look for the "Python 2.7.5 Windows Installer" link).
After that,
Download the mapnik package (I tested it with the full SDK version)
Extract the archive to C:\mapnik-v2.2.0
Add C:\mapnik-v2.2.0\lib; and C:\mapnik-v2.2.0\bin; to your PATH
Add C:\mapnik-v2.2.0\python\2.7\site-packages; to your PYTHONPATH
import mapnik

I had the same issue on WinServewr 2008 R2. The solution I found is to install Microsoft Visual C++(x86) redistributable package 10.0.40219, because mapnik depends on it. This package comes with postgreSQL 9.3 x86, so when you install only Postgre x64 version you can have this error.

I had this problem as well, even after I installed a 32-bit Python. I was getting the same error:
ImportError: DLL load failed: The specified procedure could not be found.
What fixed it in the end was copying all the DLLs to my python executable directory. I assume there was some DLL-hell type action going on and it was linking to a DLL somewhere with the same name but without that entrypoint. What entrypoint it was looking for I do not know.
In the end it was all useless though because it turns out that there is no OSM (OpenStreetMaps) plugin for the 2.2.0 version, so I decided to do this on Linux instead.
See the table at https://github.com/mapnik/mapnik/wiki/WindowsInstallation for the reference of a missing OSM plugin - execution results in a runtime error indicating the plugin could not be loaded.
I think Windows binary support for mapnik has been dropped so I don't expect much change here.

import win32api error in Python 2.6

When running python26 under windows OS (64bits).....
I have got errors like:
import win32api" error in Python 2.6: pywintypes26.dll
or
pythoncom26.dll missing
ImportError: DLL load failed: The specified module could not be found.
I have done the msi installation for python26
all dlls can be found under C:\Python26\Lib\site-packages\pywin32_system32

After I copy pywintypes26.dll and pythoncom26.dll from C:\Python26\Lib\site-packages\pywin32_system32 to C:\Python26\Lib\site-packages\win32 -> Solve the problem!

I also hit a problem importing win32api.
The post-install script for pywin32 failed, which should copy pythoncom26.dll, pythoncomloader26.dll, and pywintypes26.dll, among other things. I ran it by hand and my installation was fixed.
python scripts\pywin32_postinstall.py -install

I had a similar problem when installing under 64 bit Python 3.4.2. I ran the install executable pywin32‑219.win‑amd64‑py3.4.exe from http://www.lfd.uci.edu/~gohlke/pythonlibs/ .
On the site it states clearly:
"Python 3.4 users must manually run python.exe Scripts\pywin32_postinstall.py -install from an elevated command prompt."
which I did not do first time round; I installed from a normal prompt getting the following feedback:
c:\python34>python.exe Scripts\pywin32_postinstall.py -install
Copied pythoncom34.dll to C:\Python34\pythoncom34.dll
Copied pywintypes34.dll to C:\Python34\pywintypes34.dll
You do not have the permissions to install COM objects.
The sample COM objects were not registered.
etc.etc.
Finishing with "The pywin32 extensions were succesfully installed" ...
I only read the last sentence and I started to run some code resulting in getting these dll load fails.
So, did some research, and started an elevated prompt (how: see "http://www.sevenforums.com/tutorials/783-elevated-command-prompt.html") and again ran:
c:\python34>python.exe Scripts\pywin32_postinstall.py -install
Copied pythoncom34.dll to C:\Windows\system32\pythoncom34.dll
Copied pywintypes34.dll to C:\Windows\system32\pywintypes34.dll
Registered: Python.Interpreter
Registered: Python.Dictionary
Registered: Python
-> Software\Python\PythonCore\3.4\Help[None]=None
-> Software\Python\PythonCore\3.4\Help\Pythonwin Reference[None]='C:\\Python34\\Lib\\site-packages\\PyWin32.chm'
Pythonwin has been registered in context menu
Shortcut for Pythonwin created
Shortcut to documentation created
The pywin32 extensions were successfully installed.
And now my code runs happily (as far as this matter is concerned... sigh, so much other stuff to do).

Run the installer as Administrator and it works:
Right click on pywin32-installer.exe
Choose "Run as Administrator"

As suggested above the post install script is not run, this issue can be seen when installing from a wheel (As I encountered)
python scripts\pywin32_postinstall.py -install
If find you have this issue when installing via wheels, then installing it from here can solve the above issue.
https://pypi.python.org/pypi/pypiwin32

There appears to be a bug in the installer. The recommended workaround in the ticket is the same one as proposed by Dave Bremer.

I could fix this situation by removing all installed Python3.4 versions (had forgotten to uninstall 3.4.1 before installing 3.4.2), deleting C:\Python34 and after installing Python 3.4.2 pywin32-219.win32-py34.exe could be installed and called without problems.
So, copying around DLLs should NOT be necessary!

I always install the Active State Python distro which installs the win32 packages for you and gets it right.

If the above didn't fix the problem, you're still missing the msvcr100.dll file. It's either in your \System32\ folder, or more likely in your c:\PythonXX\Lib\site-packages\win32\ folder.
That fixed it for me after hours of search to no avail, even though it looks like the import still isn't resolved as it should be (PyCharm still gives me the squiggly underline), but it works.

First I was using pip to install pywin32 in anaconda environment, that's why no matter what I did it was failing. After trial and error, I figured out that
conda install pywin32
is the right way to install pywin32 in the anaconda package manager.

I don't know whether it's too late or not to answer this question. I also hit this problem, and I tried every method above, but neither of them worked.
Finally, I found the reason. When we install pywin32, we must choose the one that fits python's version(2.6， 2.7， 3.3， etc) and python's bit number(x64 or x86). Notice, it must fit python's bit number, not PC's bit number. If you install x86 python in a x64 PC, you have to install a pywin32 with x86.

In my case i had to copy pywintypes26.dll and pythoncom26.dll files into C:\Windows\System32 folder to work it properly in jupyter notebook.
I am using windows 10 OS with multiple python versions