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How do I install Python packages on Windows? - Stack Overflow
2014年11月24日 · Newer versions of Python for Windows come with the pip package manager. pip is already installed if you're using Python 2 >=2.7.9 or Python 3 >=3.4. Use that to install …
python - What do square brackets mean in pip install ... - Stack …
2017年10月16日 · The reason why the two pip install commands achieve same is because this is literally what has been run in the background based on the setup.py of the splinter package …
python - pip install fails with "connection error: [SSL: CERTIFICATE ...
Using easy_install: if you are really lazy and don't want to waste much time, use easy_install <package_name>. Note that some packages won't be found or will give small errors. Using …
python - How can I install cv2? - Stack Overflow
2019年9月11日 · pip install opencv-python. opencv-python. If you need support for working videos: pip install opencv-contrib-python. opencv-contrib-python. If you need a non-GUI …
How to install a Python package from within IPython?
2011年12月29日 · Such codes will install packages on the system default python version only. From my opinion, the following code would be helpful: import pip if …
python - Installing specific package version with pip - Stack Overflow
To install a specific python package version whether it is the first time, an upgrade or a downgrade use: pip install --force-reinstall MySQL_python==1.2.4 MySQL_python version …
Best way to install python packages locally for development
2010年7月19日 · The Python Packaging User Guide, which "aims to be the authoritative resource on how to package, publish and install Python distributions using current tools", recommends …
How can I Install a Python module with Pip ... - Stack Overflow
I need to install a package from PyPI straight within my script. Is there maybe some module or distutils (distribute, pip, etc.) feature which allows me to just execute something like pypi.install('
python - Check if module exists, if not install it - Stack Overflow
import pip def import_or_install(package): try: __import__(package) except ImportError: pip.main(['install', package]) This code simply attempt to import a package, where package is …
How to install a package inside virtualenv? - Stack Overflow
The venv package is part of the Python standard library, though on some platforms (notably Debian and derived distros like Ubuntu and Mint) it has been split off to a separate package …