如何在不同的virtualenv上安装PyQt4和PyQt5？

Question

I'm trying to maintain 2 python projects. one of them is using PyQt4 and another one is using PyQt5. So I created 2 virtualenv as follow.

1) installed virtualenv and virtualenvwrapper by sudo

2) logout from root(sudo)

3) created virtualenv at /home/thura/workspace/python/virtualenv

4) mkvirtualenv gui_pyqt4 under /home/thura/workspace/python/virtualenv

5) mkvirtualenv gui_pyqt5 under /home/thura/workspace/python/virtualenv

And I want to install the lib/module/etc of PyQt4 into gui_pyqt4 and install the lib/module/etc of PyQt5 into gui_pyqt5. I tried to install "pip install python-qt4" and "pip install python-qt5" but not working.

How can I install different module into different environment.?

Answer 1

You need to use the names on pypi to install a python package with pip install ...

After a quick search, pyqt4 was named PyQt4 and pyqt5 was named PyQt5 .

So please try

pip install PyQt4

in gui_pyqt4, and

pip install PyQt5

in gui_pyqt5.

Answer 2

You need to activate the appropriate virtual environment and then use the command pip install PyQt4 or pip install PyQt5 . Since you are using virtualenvwrapper, the virtual environment is activated automatically. Otherwise, use workon virtualenv_name to activate the environment.Do tell if the problem still persists.