ERROR: Failed building wheel for Pillow

Failled to build pillow on a virtualenv. Get a really long error message ending with: ERROR: Command errored out with exit status 1: venv/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-3nw04j89/Pillow/setup.py'"'"'; __file__='"'"'/tmp/pip-install-3nw04j89/Pillow/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-d2gme0ys/install-record.txt --single-version-externally-managed --compile --install-headers venv/include/site/python3.7/Pillow Check the logs for full command output.

[HelloMukama]

I solved this by explicitly deleting the version numbering inside of the requirements.txt file That way pip fetched the latest pillow version so if forexample you had … pillow==7.0.2 change it to … pillow

then save the file and rerun the pip install -r requirements.txt line and it shd work

[sucrecacao]

Solved by making sure every Pillow external library are installed. See the list here https://pillow.readthedocs.io/en/latest/installation.html Then remplaced Pillow==6.2.0 (latest version) in requirements.txt and it worked