I installed pyqt4 by using Homebrew. But when I import PyQt4 in python interpreter, It said that “No module named PyQt4”. Can somebody help me with that?
brew install pyqt, you can
brew test pyqt which will use the python you have got in your PATH in oder to do the test (show a Qt window).
For non-brewed Python, you’ll have to set your PYTHONPATH as
brew info pyqt will tell.
Sometimes it is necessary to open a new shell or tap in order to use the freshly brewed binaries.
I frequently check these issues by printing the sys.path from inside of python:
python -c "import sys; print(sys.path)"
$(brew --prefix)/lib/pythonX.Y/site-packages have to be in the
sys.path in order to be able to import stuff. As said, for brewed python, this is default but for any other python, you will have to set the
You have to check which Python you are using. I had the same problem because the Python I was using was not the same one that brew was using.
In your command line:
output: /usr/local/bin/brew //so they are different
ls//you can see PyQt4 and sip are here
- Now you need to add
usr/local/lib/python2.7/site-packagesto your python path.
open ~/.bash_profile//you will open your bash_profile file in your editor
'export PYTHONPATH=/usr/local/lib/python2.7/site-packages:$PYTHONPATH'to your bash file and save it
- Close your terminal and restart it to reload the shell
import PyQt4// it is ok now
If you’re using Anaconda to manage Python on your system, you can install it with:
$ conda install pyqt=4
=4 to install the most current version.
Answer from How to install PyQt4 in anaconda?
I solved the same problem for my own program by installing
I’m not using Python 3 but it still helped.
It is likely that you are running the python executable from /usr/bin (Apple version) instead of /usr/loca/bin (Brew version)
You can either
a) check your PATH variable
to check if it is the case.