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I'm using pycharm with pyqt5.6 and qt5.6.2 and the problem started when I upgraded to these versions.

I've tried searching as much as I can, but have not been able to find an answer. Can anyone help please?

Assume you are running under Windows. Application Error code 0xc0000005, also known as Access Violation error, is a common problem experienced by Windows users, regardless of os version. There are various causes to trigger Application Error 0xc0000005. For my case, I'm running debug mode in PyCharm (or Eclipse) with code that includes the following:

from pympler import muppy
all_objects=muppy.get_objects()  # this causes pydev debugger exit with code -1073741819 (0xC0000005)
It was perfectly fine if execute the same piece of code through PyCharm in non-debug (Run) mode. Disabled the above code in debug mode, issue resolved.
Environment: PyCharm Community 2019.3, Anaconda 3, Python 3.7.3, pympler 0.7, Windows 10 Enterprise
                This was helpful, although not exactly what happened to me. I was getting the error both in 'debug' & 'run' mode in PyCharm, but it was definitely PyCharm that was causing the error. I ran the script from terminal and the error was gone.
– Laguilhoat
                Aug 25, 2022 at 9:31
                Do you remember what solved your problem? I get the same error codes and I'm using PySide2 (now the official Python bindings for Qt 5).
– HelloGoodbye
                Nov 10, 2019 at 22:21
                Yes, it wasn't anything to do my the code, it was due to problems finding the DLLs that were needed. The path environment variable wasn't pointing to the right place. Trial and error was all that worked!
– A Rob4
                Nov 12, 2019 at 7:25
                Okay. I had a completely weird problem, where if I assigned the pixmap from a QImage to a QLabel, with setPixmap, in the same function as I created the QImage, it would work fine, whereas if I created the QImage in one function, stored it, and then assigned its pixmap to the QLabel in another function, the script would crash and give me this error code during the call to setPixmap. I have no idea why this happened, but I simply made sure to have the QImage creation and the call to setPixmap in the same function because then it works.
– HelloGoodbye
                Nov 12, 2019 at 9:25
Use faulthandler it will show the stack trace when application crashes through which u can debug the issue
import faulthandler
if __name__ == "__main__":
    faulthandler.enable() #start @ the beginning
    ... # application logic
Same problem,  this resolved in my case:
try run from command line (no pycharm), it works ( exception only in debug )
closed pycharm
deleted ".idea" folder inside project path
opened pycharm
reconfigure python runtime version and command line parameter
debug works
I encountered the same issue today.  I found this question while Googling for an answer!  By luck, I found the root cause in my code.
When I tried to expand a self pointer in the IntelliJ Python debugger, my Python interpreter would crash with: Process finished with exit code -1073741819 (0xC0000005)
Here is the code that caused the issue:
@property
def prop(self):
    return self.prop  # Facepalm: I meant to write: self._prop
When expanding self in the debugger, IntelliJ iterates all properties in the object.  If there is infinite loop/recursion, the Python interpreter will crash.
        
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