CODEWITHSUNDEEP
python
Francis Michels
Francis Michels

Reputation: 527

ImportError: No module named PyQt4.QtCore

I've reïnstalled my ssh server, so I also need to reïnstall my Python packages.

I did that, but I still get the error:

ImportError: No module named PyQt4.QtCore

I've already successfully installed:

sudo apt-get install libqt4-dev

But still it don't work, so I tried the installation instruction of PyQt4

So I've tried to install SIP first, but when I run "make" (see end of this page, "Building")

But I get this error:

make[1]: Entering directory `/home/francis/Downloads/sip-4.12.4/sipgen'
g++  -o sip main.o transform.o gencode.o extracts.o export.o heap.o parser.o lexer.o 
make[1]: g++: Command not found
make[1]: *** [sip] Error 127
make[1]: Leaving directory `/home/francis/Downloads/sip-4.12.4/sipgen'
make: *** [all] Error 2

What do I have to do? Or is there an other way to install PyQt4?

Thanks!

Upvotes: 23

Views: 121892

Answers (7)

Taha Hamedani
Taha Hamedani

Reputation: 113

Try this command to solve your problem.

sudo apt install build-essential python3-dev libqt4-dev

This works for me in python3.

Upvotes: 0

Arik Pamnani
Arik Pamnani

Reputation: 441

I was having the same error - ImportError: No module named PyQt4.QtGui. Instead of running your python file (which uses PyQt) on the terminal as - 

python file_name.py

Run it with sudo privileges -

sudo python file_name.py

This worked for me!

Upvotes: 14

Mark K
Mark K

Reputation: 9338

I had the same issue when uninstalled my Python27 and re-installed it.

I downloaded the sip-4.15.5 and PyQt-win-gpl-4.10.4 and installed/configured both of them. it still gives 'ImportError: No module named PyQt4.QtCore'. I tried to move the files/folders in Lib to make it looked 'have' but not working.

in fact, jut download the Windows 64 bit installer for a suitable Python version (my case) from http://www.riverbankcomputing.co.uk/software/pyqt/download and installed it, will do the job.

* March 2017 update *

The given link says, Binary installers for Windows are no longer provided.

See cgohlke's answer at, PyQt4 and 64-bit python.

  1. Download the .whl file at http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyqt4.
  2. Use pip to install the downloaded .whl file.

Upvotes: 4

ramu
ramu

Reputation: 1495

I got the same error, when I was trying to import matplotlib.pyplot

In [1]: import matplotlib.pyplot as plt
...
...
ImportError: No module named PyQt4.QtCore

But in my case the problem was due to a missing linux library libGL.so.1

OS : Cent OS 64 bit

Python version : 3.5.2

$> locate libGL.so.1

If this command returns a value, your problem could be different, so please ignore my answer. If it does not return any value and your environment is same as mine, below steps would fix your problem.

$> yum install mesa-libGL.x86_64

This installs the necessary OpenGL libraries for 64 bit Cent OS.

$> locate libGL.so.1
/usr/lib/libGL.so.1

Now go back to iPython and try to import

In [1]: import matplotlib.pyplot as plt

This time it imported successfully.

Upvotes: 0

Sergio Morstabilini
Sergio Morstabilini

Reputation: 2055

I had the "No module named PyQt4.QtCore" error and installing the python-qt4 package fixed it only partially: I could run

from PyQt4.QtCore import SIGNAL

from a python interpreter but only without activating my virtualenv.

The only solution I've found till now to use a virtualenv is to copy the PyQt4 folder and the sip.so file into my virtualenv as explained here: Is it possible to add PyQt4/PySide packages on a Virtualenv sandbox?

Upvotes: 2

Kimvais
Kimvais

Reputation: 39548

As mentioned in the comments, you need to install the python-qt4 package - no need to recompile it yourself.

sudo apt-get install python-qt4

Upvotes: 33

VKolev
VKolev

Reputation: 825

You don't have g++ installed, simple way to have all the needed build tools is to install the package build-essential:

sudo apt-get install build-essential

, or just the g++ package:

sudo apt-get install g++

Upvotes: 1

Related Questions