ModuleNotFoundError: No module named 'psychopy' [Details Inside]

Coding
1

Hey, I’m new to Python and Psychopy but not really to programming. I’ve tried running the following:

print("foo")
from psychopy import visual, core, gui, event
print("bar")

Both from the command line and inside the Spyder IDE, I get the following error:

Traceback (most recent call last):
  File "test.py", line 2, in <module>
    from psychopy import visual, core, gui, event
ModuleNotFoundError: No module named 'psychopy'

System specs: macOS High Sierra v.10.13.4, Macbook Air

Python version: Python 3.7.1 (python -V)

I’ve installed the following dependencies: wxPython, pyo, and the ones in the following code:

pip install numpy scipy matplotlib pandas pyopengl pyglet pillow 
moviepy lxml openpyxl xlrd configobj pyyaml gevent greenlet 
msgpack-python psutil tables requests[security] pyosf cffi 
pysoundcard pysoundfile seaborn psychopy_ext python-bidi psychopy
pip install pyserial pyparallel egi iolabs
pip install pytest coverage sphinx

pip install pyobjc-core pyobjc-framework-Quartz

All from this resource. It seemed to run without a hitch (aside from some that didn’t like Spyder, but I ran it on the command line as well as Spyder, so that shouldn’t be a problem).

Any suggestions?

2

Inside your Python site packages directory, did those libraries all get installed there?

And is Spyder configured to use that version of Python, and not your system-provided Python?

3

Hi! I am having the same problem. I’m trying to import psychopy on spyder (not for the actual experiment but just to fiddle around with a few things). I keep pip installing it in the python console on spyder, however, whenever I try to import it in a script, it says:

ModuleNotFoundError: No module named ‘psychopy’

Btw. I also have psychopy downloaded normally to run the actual experiment etc. Does anyone know how to fix this?

4

Is the Python in your console the same one Spyder is set up to run scripts with?

Does the same thing happen when you pip install a non-PsychoPy package?

5

Dear Michael,

Thank you for your reply!

I would have thought it is, however, how would one check this? And unfortunately, it doesn’t happen when installing & importing modules other than psychopy. Is pip installing it in the python console & then importing it in a script a legitimate way to run psychopy in Spyder?

EDIT: I have tried creating a environment in anaconda using conda create & activated it, however, when I try to install psychopy in that environment, I get the following error.

ERROR: Command errored out with exit status 1:
     command: /Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-install-kd5wnd94/greenlet/setup.py'"'"'; __file__='"'"'/private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-install-kd5wnd94/greenlet/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-record-jdgoi765/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.8/include/python3.8/greenlet
         cwd: /private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-install-kd5wnd94/greenlet/
    Complete output (9 lines):
    running install
    running build
    running build_ext
    building 'greenlet' extension
    creating build
    creating build/temp.macosx-10.9-x86_64-3.8
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -I/Library/Frameworks/Python.framework/Versions/3.8/include/python3.8 -c greenlet.c -o build/temp.macosx-10.9-x86_64-3.8/greenlet.o
    xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
    error: command 'gcc' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-install-kd5wnd94/greenlet/setup.py'"'"'; __file__='"'"'/private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-install-kd5wnd94/greenlet/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/xw/lplw3cms2v78w_f7l8kbjv3m0000gn/T/pip-record-jdgoi765/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.8/include/python3.8/greenlet Check the logs for full command output.
6

I think you might need to install or update Apple’s command line tools required to build and install some packages. I used to think this required the massive Xcode install, but apparently not, e.g. see:

7

Thank you! In fact, I managed to get it to working in the end using advice from another post you replied to.

SOLUTION (if anyone else has this problem): Following installation of anaconda, I created an environment in the terminal.

conda create -n psychopyenv python=3.7

Then installed pip, spyder & psychopy in this environment.

conda install -n psychopyenv pip spyder psychopy

Then activated this environment & opened spyder within in.

conda activate psychopyenv
spyder

Then if you try to import or pip install psychopy & use modules within in on either the scripts or console, it works!

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