Develop Reference

Process finished with exit code -805306369 (0xCFFFFFFF) [duplicate]

I'm running a python script and it used to work (it even does on my other laptop right now) but not on my current computer - I just get the error code:
Process finished with exit code -1073741515 (0xC0000135)
I don't get any other results - not even from "print" commands at the beginning of the file.
I haven't found anything specific to that.
I re-installed python (2.7.9), pygame (1.9.1) and even pycharm (tried 4.5 first, now with 5.0 - same result)
Does anyone know what that error code means? I couldn't find anything about it.

reinstall python – you don't have python33.dll in c:\WINDOWS\system32\
Maybe you have different python versions – look at folders in root of c:
If yes, then point to your version of python.exe in pyCharm > Settings > Project Interpreter

This may be due to another program locking that memory location.
Before you try more drastic measures, know that restarting the computer fixed the problem for me.

The error seems to be related to issues in native code (e.g. C/C++) and might be related to issues in loading some dll file. To know which file, the Windows "Event Viewer" is your friend.
The "Event Viewer" -> "Windows Logs" -> "Application" feed usually shows one or more rows for each crashed application and one of them should list the problematic filename.
Personally I observed similar issue with matplotlib on Python 3.9 (installed using Anaconda on Windows 10). I could see this kind of error when the code was executed using PyCharm. The same code just crashed with no visible errors when starting from Anaconda console.
The Event viewer then showed issue with freetype.dll. In this case, the problem was fixed by downgrading the packege from 2.11.0 to 2.10.4:
conda install freetype=2.10.4
Depending on the exact issue, I could imagine that removing pycache folder might help (like mentioned in other answers). Also, sometimes it might make sense to look at the PATH environment variable to actually understand why certain dll file is loaded from such a location.

I got this error in PyCharm after upgrading pyarrow to the most recent version -- 0.16 --- using pip, running the same code I had ran before this update which used pandas read_parquet specifying the engine="pyarrow" triggering use of this library. After uninstalling and installing the previous version with
pip install pyarrow=="0.15"
the problem resolved.

I encountered the same error when running .py in PyCharm on Windows. Inspired by https://thenewboston.com/forum/topic.php?id=10088, I uninstalled and reinstalled Python. When reinstalling, I checked the ADD PYTHON TO THE PATH Option. After recreating the virtual environment in PyCharm, the error was gone.
Update: On another Windows PC (64-bit), I encountered the same error where reinstalling Python was not enough. I tried two things.
Uninstalling 32-bit Python and installing 64-bit Python. Namely downloading python-3.6.4-amd64.exe instead of python-3.6.4.exe
Recreating the Pycharm project from github.
Between the two actions, the error was gone.

taskkill /F /IM python.exe
Try this if it just happened out of the bloom and it worked normally before that error occurred.

I solved it by disabling "PyQt compatible" checkbox in the Settings under Build, Execution, Deployment --> Python Debugger.
After that, it should debug properly.

Here is caused it and solution:
The computer had two physical processors. The code uses Numba for parallel computations. Upon disabling and re-enabling hyperthreading this issue started. To solve it clear pycache folder and run the program.

I encountered this error in my code as well, in my case the problem was sharing pickle which produced in Unix machine one a Windows one.

**I faced the same situation and the malfunction stems from trying to run both terminal processor and graphical user interfaces. When I clicked the button program stopped running **
Solution: I disabled terminal inputs and work with graphics.
For example:
if you do this
entry1=Entry(root,width=10).pack()
variable= str(input("Whats your name?"))
You will see the error.
if you delete either entry1 or variable, you will not see the problem.

If you're trying create a .svm use dlib probably the problem is in .xml, some image that you use is cause the problem. Try to create a new .xml putting out a image(any image) or remove that your .xml and test, try this even you find out the image problem.
For exemple, the image "treinamento3.jpg" was the problem. I removed this command line:
< image file='delirium\treinamento3.jpg'>
< box top='213' left='86' width='46' height='49'/ >
< box top='531' left='47' width='125' height='123'/ >
< /image >
from my .xml for solve my problem.

importing dlls with pythonnet in spyder

I have a python package that acts like a wrapper for a .dll written in C#. The binary is imported into python by the pythonnet package. Thus, the user can access the functionality of the so called cs_backend.dll conveniently from the python side. The import looks as follows:
import clr as __clr
import System as __System
__clr.AddReference(PATH_TO_CS_BACKEND + "\\cs_backend")
import cs_backend as __csb # exception thrown here
However, it seems that python can't import the .dll as I get a ModuleNotFoundError: No module named 'cs_backend'.
The odd thing is that this error only occures when running the code from Spyder. Executing exactly the same code from Visual Studio Code works perfectly fine.
Do you have any idea what the problem could be?
system specifications
os: windows 10
.net framework v4.5.1
python 3.8.5
spyder 4.2.1
Edit:
I have found a github issue on the pythonnet repository that describes a similar (although not quite the same) problem. However, since it has been open for about 3 years, it seems that there is little to no progress on that.
Edit 2:
There is a similar question here on stack overflow. The solution was to install a newer .NET Framework. This is not my problem since with any IDE other than Spyder the code works just fine. Thus, I guess that this is mainly a Spyder issue.

Currently, it seems that there is neither a solution nor an effort to resolve this problem.
It looks like the problem is caused by the IPython console integrated in Spyder.
A simple workaround is to execute the python script from the system console.
In Spyder this can be done by going to Run - Configuration per file - Execute in external system console.
With the new configuration it is at least possible to run the script.

Process finished with exit code -1073741515 (0xC0000135)

I'm running a python script and it used to work (it even does on my other laptop right now) but not on my current computer - I just get the error code:
Process finished with exit code -1073741515 (0xC0000135)
I don't get any other results - not even from "print" commands at the beginning of the file.
I haven't found anything specific to that.
I re-installed python (2.7.9), pygame (1.9.1) and even pycharm (tried 4.5 first, now with 5.0 - same result)
Does anyone know what that error code means? I couldn't find anything about it.

reinstall python – you don't have python33.dll in c:\WINDOWS\system32\
Maybe you have different python versions – look at folders in root of c:
If yes, then point to your version of python.exe in pyCharm > Settings > Project Interpreter

This may be due to another program locking that memory location.
Before you try more drastic measures, know that restarting the computer fixed the problem for me.

The error seems to be related to issues in native code (e.g. C/C++) and might be related to issues in loading some dll file. To know which file, the Windows "Event Viewer" is your friend.
The "Event Viewer" -> "Windows Logs" -> "Application" feed usually shows one or more rows for each crashed application and one of them should list the problematic filename.
Personally I observed similar issue with matplotlib on Python 3.9 (installed using Anaconda on Windows 10). I could see this kind of error when the code was executed using PyCharm. The same code just crashed with no visible errors when starting from Anaconda console.
The Event viewer then showed issue with freetype.dll. In this case, the problem was fixed by downgrading the packege from 2.11.0 to 2.10.4:
conda install freetype=2.10.4
Depending on the exact issue, I could imagine that removing pycache folder might help (like mentioned in other answers). Also, sometimes it might make sense to look at the PATH environment variable to actually understand why certain dll file is loaded from such a location.

I got this error in PyCharm after upgrading pyarrow to the most recent version -- 0.16 --- using pip, running the same code I had ran before this update which used pandas read_parquet specifying the engine="pyarrow" triggering use of this library. After uninstalling and installing the previous version with
pip install pyarrow=="0.15"
the problem resolved.

I encountered the same error when running .py in PyCharm on Windows. Inspired by https://thenewboston.com/forum/topic.php?id=10088, I uninstalled and reinstalled Python. When reinstalling, I checked the ADD PYTHON TO THE PATH Option. After recreating the virtual environment in PyCharm, the error was gone.
Update: On another Windows PC (64-bit), I encountered the same error where reinstalling Python was not enough. I tried two things.
Uninstalling 32-bit Python and installing 64-bit Python. Namely downloading python-3.6.4-amd64.exe instead of python-3.6.4.exe
Recreating the Pycharm project from github.
Between the two actions, the error was gone.

taskkill /F /IM python.exe
Try this if it just happened out of the bloom and it worked normally before that error occurred.

I solved it by disabling "PyQt compatible" checkbox in the Settings under Build, Execution, Deployment --> Python Debugger.
After that, it should debug properly.

Here is caused it and solution:
The computer had two physical processors. The code uses Numba for parallel computations. Upon disabling and re-enabling hyperthreading this issue started. To solve it clear pycache folder and run the program.

I encountered this error in my code as well, in my case the problem was sharing pickle which produced in Unix machine one a Windows one.

**I faced the same situation and the malfunction stems from trying to run both terminal processor and graphical user interfaces. When I clicked the button program stopped running **
Solution: I disabled terminal inputs and work with graphics.
For example:
if you do this
entry1=Entry(root,width=10).pack()
variable= str(input("Whats your name?"))
You will see the error.
if you delete either entry1 or variable, you will not see the problem.

If you're trying create a .svm use dlib probably the problem is in .xml, some image that you use is cause the problem. Try to create a new .xml putting out a image(any image) or remove that your .xml and test, try this even you find out the image problem.
For exemple, the image "treinamento3.jpg" was the problem. I removed this command line:
< image file='delirium\treinamento3.jpg'>
< box top='213' left='86' width='46' height='49'/ >
< box top='531' left='47' width='125' height='123'/ >
< /image >
from my .xml for solve my problem.

HTTP Error 502.2 - Bad Gateway Configuring IIS 7 with Python 2.7

I am a newbie to Stack Overflow (first post), but really see the use of this website.
I'm stumped. We are trying to setup IIS 7.0 to run with WinPython 2.7 on a Windows 7 machine.
I am an IIS newb, but veteran Python user. IIS 7 can NOT find a library, which python finds, and executes, perfectly when ran on it's own. When executed via IIS, the script fails with a traceback, and IIS returns the 502.2.
I found this thread http://forums.iis.net/p/1209465/2073173.aspx?HTTP+Error+502+2+Bad+Gateway+Frustrations but the advised solution is simply another troubleshooting suggestion.
I found IIS's description (http://support.microsoft.com/kb/942057) of the error helpful, but futile.
I found Python's start-up options/parameters helpful (http://docs.python.org/2/using/cmdline.html), but futile.
I found IIS's advice for configuring Python helpful (http://support.microsoft.com/kb/276494, but (questionably?) incomplete.
This thread on manually defining an alternate bin folder (http://forums.asp.net/t/1303052.aspx?Tell+IIS+to+load+dll+from+another+directory+not+Bin+web+config+) might be where my solution lies, but I don't think it is because of the fact that this all worked on 2.6 without doing that to IIS.
IIS seems to allow python to import any module that is just a python script. As soon as it gets to a *.pyd (basically just python's version of a dll file) file, it screams. I'm no pro when it comes to DLLs and windows environments, but wouldn't IIS have to have paths to a bin folder of some kind? Do I have to manually edit them, as discussed in the last link above?
ACTUAL ERROR Details below for DLL failed Load:
The Error :
" HTTP Error 502.2 - Bad Gateway The specified CGI application
misbehaved by not returning a complete set of HTTP headers. The
headers it did return are "Traceback (most recent call last): File
"\estorage.equitable.int\riskmgmt\Quants\web\LinksPage.py", line 2,
in import pyweb File
"\estorage.equitable.int\riskmgmt\Quants\Common2014\Python\pyweb__init__.py",
line 5, in from core import * File
"\estorage.equitable.int\riskmgmt\Quants\Common2014\Python\pyweb\core.py",
line 2, in from pylib import pgdb File
"\estorage.equitable.int\riskmgmt\Quants\Common2014\Python\pylib\pgdb.py",
line 8, in from scikits import timeseries as ts File
"C:\WinPython-32bit-2.7.6.2-20140401\python-2.7.6\lib\site-packages\scikits.timeseries-0.91.3-py2.7-win32.egg\scikits\timeseries__init__.py",
line 13, in import const File
"C:\WinPython-32bit-2.7.6.2-20140401\python-2.7.6\lib\site-packages\scikits.timeseries-0.91.3-py2.7-win32.egg\scikits\timeseries\const.py",
line 79, in from cseries import freq_constants ImportError:
DLL load failed: The specified module could not be found. ".
I'm confident that the python environment is configured properly, as the script runs from the same executable (python.exe) via a command line. I'm thinking that I don't have IIS configured properly, for the new Python 2.7 install. The same script worked yesterday, on IIS and python 2.6. But during our upgrade from 2.6 to 2.7, a bunch of PATH and PYTHONPATH parameters all changed, plus we went from ActivePython to WinPython. WinPython is "registered" on the machine.
What I've tried
confirming python's sys.path is as expected at run-time in both IIS and command line - it is.
using the module from python command line.
recompiling the failing module using two different compilers (ming32 and VS2008).
putting duplicates of my new 2.7 modules in the old python26 folder.
pulling out lots of hair and other hacky stuff.
My next step, is to post this same message on a python forum. If anybody can advise on a good one for python-IIS related challenges, that would be appreciated.
Please help! Thanks in advance.

I got this 502.2 error when doing a clean installation of PHP 5.5 in Windows Server 2012 R2 with IIS 8.5.
It turns out PHP is a Visual C++ application which needs the library MSVCR110.dll in order to run properly. My computer does not have Visual Studio 2012 installed and thus it does not have this file. I got my problem solved by installing the Visual C++ Redistributable Packages https://www.microsoft.com/en-us/download/details.aspx?id=30679#

(Note: jc77 is my associate, and I'm actually the OP, as this was an x-post from IIS forums.)
We solved the problem.
tl,dr; portable python + sloppy/rookie compiling = strange behaviour + frustrations.
Bottom line, compile properly. For scikits.timeseries, using ming32 everything will walk, talk, and sound like it works in Spyder.exe, but not in python.exe. You have to use VS2008, if you want it to work in both.
More Info:
Winpython (as well as others) presents itself as identical to any other python installations, if you "register" the installation. It works great, 99% of the time. We learned the hard way, that "Winpython Interpreter.exe" and "python.exe" provided in the install are in fact different. Can't explain why, but the two executables gave different behavior. We were doing all our testing in Spyder, which must use "winpython interpreter.exe". The module which IIS couldn't find, would import and run no problem in Spyder. Then, in IIS, using python.exe, the module wouldn't import. We were operating on the assumption that the IDE would use python.exe, and that the stack was identical. As, 99% of the time, they appear to be. The way we were compiling scikits worked in winpython interpreter.exe. We were making a rookie mistake when compiling scikits, but it went un-noticed because it was working fine in our IDE (Spyder).
I'm adding these keywords for others : Anybody else who receives errors like this is likely using a portable python installation AND not compiling something properly. Winpython, Portable Python, eGenix, [and possibly?] Active State and Enthought Canopy.

While trying to configure CGI to run Perl in Windows 8.1, I had HTTP Error 502.2, but then I read loste's post and solved the problem. I had previously installed both Perl64 and Strawberry Perl. Although the IIS EventHandler pointed to only the Perl64 directory, both directories appeared in my Windows PATH variable. I prefer Strawberry Perl, so I changed the EventHandler to point to the Strawberry Perl directory and deleted the paths to Perl64 from the Windows PATH variable to solve the error.

Try this
print("Content-Type: text/html\n")
print("Hello Python World!")
You must specify the type of document

Is it possible to write a windows service using Python?

Python has a win32service package that seems to allow windows service creation. I have carefully checked available google examples, for example this one:
Is it possible to run a Python script as a service in Windows? If possible, how?
I have placed code into ~/Documents/test.py and executed following under elevated command prompt:
> python test.py install
> python test.py debug
Unfortunately, every example i tried fails with error:
Debugging service TestService - press Ctrl+C to stop.
Error 0xC0000005 - Python could find the service class in the module
AttributeError: 'module' object has no attribute 'AppServerSvc'
(null): (null)
I have tested it with latest version of ActivePython (2.7.2.5 32-bit) on Windows 7 64-bit and Windows 8 64-bit. Of course, if service is started maually via service manager, it will not start either.
Am i doing something wrong or Python is not intended to be used for service creation on modern operating systems? Maybe i need a specific version of windows/python/pywin32? Of course, i can manually test all combinations starting from windows XP but it will take lots of time :(. Maybe someone already has experience with Python and windows services and can hint me what i'm doing wrong?
update
Tested on Windows XP 32-bit virtual macine (same code, same activepython distribution) - same error.

It appears that there is a bug in the ActiveState build for PyWin32. Installing ActiveState python 2.7.2.5 and running the linked sample code above, I get the same error that you are reporting.
But if I download Python 2.7.3 (2.7.2.5 does not seem to be available for download) and add PyWin32 build 214 (ActiveState seems to be using the 214 version of PyWin32). Then everything seems to work just fine. I also tried the latest build of PyWin32 (218) and it also worked correctly.
So I guess you can try reporting the problem to ActiveState (I don't have a support contract with them) and unless you have a requirement for using ActiveState, you can just switch to the standard Python builds.
I have been using services with the standard Python builds for years running on everything from Windows 2000 up to Server 2008 and Windows 7 with no problems. So I have good reason to believe that it will work for you also.
If you want to work with ActiveState to get the problem fixed, then the bug appears to be in their build of PythonService.cpp in the LoadPythonServiceInstance function. I looked at the registry entries that were created and they look fine, it is the PythonService.exe that is failing at loading your class. Based on the error message it appears to have loaded the module correctly and is just having trouble finding the class.