Python 2.7 installing opencv via pip (virtual environment)
33,785
Python 2.7 is not supported anymore in opencv-python-4.3.0.38
. Support was dropped in 4.3.0.36
; see this issue.
The workaround I found was to install opencv-python
version 4.2.0.32 (which is the latest supported for Python 2.7, see this for all releases) like this:
pip2 install opencv-python==4.2.0.32
Author by
forqed
Updated on July 09, 2022Comments
-
forqed almost 2 years
I'm trying to install opencv-python package via pip inside virtual environment (Python 2.7). Unfortunately, I'm getting an error:
(venv) $ pip2 install opencv-python DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support Collecting opencv-python Using cached opencv-python-4.3.0.38.tar.gz (88.0 MB) Installing build dependencies ... done Getting requirements to build wheel ... error ERROR: Command errored out with exit status 1: command: /home/pc_user/.venvs/venv/bin/python /home/pc_user/.venvs/venv/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmp7q7z4L cwd: /tmp/pip-install-C21PKF/opencv-python Complete output (22 lines): Traceback (most recent call last): File "/home/pc_user/.venvs/venv/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py", line 280, in <module> main() File "/home/pc_user/.venvs/venv/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py", line 263, in main json_out['return_val'] = hook(**hook_input['kwargs']) File "/home/pc_user/.venvs/venv/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py", line 114, in get_requires_for_build_wheel return hook(config_settings) File "/tmp/pip-build-env-2FzygL/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 146, in get_requires_for_build_wheel return self._get_build_requires(config_settings, requirements=['wheel']) File "/tmp/pip-build-env-2FzygL/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 127, in _get_build_requires self.run_setup() File "/tmp/pip-build-env-2FzygL/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 243, in run_setup self).run_setup(setup_script=setup_script) File "/tmp/pip-build-env-2FzygL/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 142, in run_setup exec(compile(code, __file__, 'exec'), locals()) File "setup.py", line 448, in <module> main() File "setup.py", line 99, in main % {"ext": re.escape(sysconfig.get_config_var("EXT_SUFFIX"))} File "/usr/lib/python2.7/re.py", line 210, in escape s = list(pattern) TypeError: 'NoneType' object is not iterable ---------------------------------------- ERROR: Command errored out with exit status 1: /home/pc_user/.venvs/venv/bin/python /home/pc_user/.venvs/venv/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmp7q7z4L Check the logs for full command output.
I've tried to create a new environment or installing through
python2 -m pip install
but the effect is the same. What's the problem? -
jtlz2 over 3 yearsThis works for
opencv-python-headless
too of course