Importing the multiarray numpy extension module failed. Most likely you are trying to import a failed build of numpy

Question

my project run local on pycharm without error but when i deployed it on heroku
error message appears :Importing the multiarray numpy extension module failed. i changed numpy version more than one but it does not work

Django Version: 2.2.5

Exception Type: ImportError

Exception Value: Importing the multiarray numpy extension module failed. Most likely you are trying to import a failed build of numpy. If you're working with a numpy git repo, try git clean -xdf (removes all files not under version control). Otherwise reinstall numpy.

Original error was: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory

Exception Location: /app/.heroku/python/lib/python3.6/site-packages/numpy/core/ init .py in , line 26

Python Executable: /app/.heroku/python/bin/python

Python Version: 3.6.10

numpy version : 1.18.1

any solution?

Answer 1

i solve it

my solution was

Run locally 1- python -m pip install python-dev-tools

then 2- pip freeze > requirements.txt

3-git add .

4-git commit -m "v5"

5- heroku git:remote -a "your appname on heroku"

6-git push heroku master