I tried to run this simple code, which is about GUI programming in python usinh Python GTK+ 3:
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
win = Gtk.Window()
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()
I have anaconda 5.2 installed with Python 3.6 under Windows 10, and I get this error:
import gi
ImportError: No module named 'gi'
Even if I install anaconda 4.2 with Python 3.5 I get the same error.
I could not figure out how to install gi, which is apparently part of PyGObject.
using pip install PyGObject results in an error:
Failed building wheel for PyGObject
Can anybody help?
As I explain in this answer there are two ways (afaik) to install PyGObject in Windows.
If you use the .exe installer you'll be restricted to Python 3.4. I've never used it with Anaconda, but the installer (before automatically checking for Python interpreter installations) lets you select "portable" installations of the interpreter (I believe this might be the way to point to a virtual environment interpreter, maybe a conda installed interpreter, I've never used it though). You can try and let it try to find your interpreter automatically and if it doesn't then you can cancel the install and re try with the "portable" approach.
If you use MSYS2 I really don't know how you can make it work. You'll have to use the included pacman instead of Anaconda to manage your packages, so I don't know if this is what you want.
Related
I have installed git-cola using the setup installer for windows. I pointed it to proper installs of git and python.
When I try to launch git-cola, nothing happens whatsoever.
Is there something I am missing here?
I had the same problem, in my case it was missing PyQt4 library. You can install PyQt4 by downloading an appropriate installer from Binary Packages section on PyQt4 Riverbank website.
How I investigated the issue
When I installed git-cola in a default directory and tried to run it using a command line
C:\Program Files (x86)\git-cola\bin>python git-cola.pyw
I got
Sorry, you do not seem to have PyQt4 installed.
Please install it before using git-cola.
e.g.: sudo apt-get install python-qt4
Note
I have two Python 2.7 installations, one at c:\program\Python27 and another at C:\Users\UserName\Anaconda2, I used the first one. I also installed Python SIP some time ago, I'm not sure if it required by git-cola.
I have a running Python 2.7/3.4 installation on my Windows 7 (x64) machine. I would like to test curses on Windows.
Curses is installed but not working:
>>> import curses
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Tools\Python3.4.2\lib\curses\__init__.py", line 13, in <module>
from _curses import *
ImportError: No module named '_curses'
The documentation says:
The Windows version of Python doesn’t include the curses module. A ported version called UniCurses is available.
So, the Windows installer of Python 3.4 installed curses with unresolved dependencies. One could name this a bug...
OK, I looked into UniCurses. It's a wrapper for PDCurses:
UniCurses is a wrapper for Python 2.x/3.x that provides a unified set of Curses functions on all platforms (MS Windows, Linux, and Mac OS X) with syntax close to that of the original NCurses. To provide the Curses functionality on Microsoft Windows systems it wraps PDCurses.
Installing UniCurses via pip3 results in an error:
C:\Users\Paebbels>pip3 install UniCurses
Downloading/unpacking UniCurses
Could not find any downloads that satisfy the requirement UniCurses
Some externally hosted files were ignored (use --allow-external UniCurses to allow).
Cleaning up...
No distributions at all found for UniCurses
Storing debug log for failure in C:\Users\Paebbels\pip\pip.log
The link to SourceForge on Python's UniCurses site is dead. A manual search an SourceForge helped to find UniCurses for Python again.
But, the UniCurses 1.2 installer can not find any Python installation in my Windows registry. (Python 2.7.9 and Python 3.4.2 are available).
I also looked into Public Domain Curses (PDCurses). PD Cureses 3.4 is from late 2008. So it's 7 years old. I don't believe it will work either with Windows 7 nor Windows 8.1 or Windows 10.
Is there any way to get curses running on Windows with Python.
(The Windows Python, not the CygWin Python!)
You can use curses cross-platform (Windows, MacOS, GNU/Linux) if you install manually for Windows or like other package in others.
Install wheel package. If you need more info about wheel click here.
Go to this repository.
Download a package with your python version, in example for python 3.4:
curses-2.2-cp34-none-win_amd64.whl
Install it (this command if for windows, in GNU/Linux install like other package)
python -m pip install curses-2.2-cp34-none-win32.whl
Just include in your python script:
import curses
You can use curses wrapper for python. Works in Fedora 25 in all terminals, and Windows 10 using git bash, powershell, or cmd.
Update:
An alternative to curses in Windows here.
Console user interface in Windows here.
An interesting tutorial here.
Now we can easy install on python 3.7 using pip install windows-curses
You can try my mirror of unicurses, which includes pdcurses dlls. I have it currently up and running on windows 7 with python 3.5.0.
To quickly test if it works for you, just clone the repository and create and run a python script within its toplevel directory containing something like
from unicurses import *
stdscr = initscr()
addstr("hello world")
getch()
I use Windows 7 and Python 3.4 (32bit). I installed PyQt5 and proceeded watching tutorials on how to use the module. However, the tutorial used PyQt4 instead and I faced problems. So, I decided to switch from PyQt5 to the older, PyQt4. I installed PyQt5 using the Windows Installers.
When I proceeded to install PyQt4, it gives me this error message: A copy of PyQt5 for Python v3.4 is installed in C:\Python34 and must be uninstalled first.
After checking the documentation, it said that we couldn't have both PyQt4 and PyQt5 installed at the same time, unless we built from source. I'm not sure how to build from source on Windows but after trying(extracting sip, running configure.py; extracting PyQt4, running configure-ng.py/configure.py) I still get a bunch of errors namely:
something Qmake related
Import Error: No module named sipconfig.
I gave up trying to build from source and instead just wanted to uninstall PyQt5 so I could use PyQt4. I deleted the sip folder and PyQt4 from the botched installation first. Then, I deleted PyQt5 itself from site-packages as well as qt.conf in C:\Python34.
Running the binaries for PyQt4 still gives me the PyQt5 is installed error message. How do I uninstall PyQt5 completely so that I can install PyQt4? Thanks.
I installed PyQt5 again using the installer and the used the uninstall.exe provided in the PyQt5 folder in site-packages. I hope this solution is helpful for others such as those here.
Uninstall using uninstall.exe which is provided in your PyQt4/5 folder in site-packages. If you already deleted the folder, just reinstall it with the .exe you first used and try again.
Try:
pip3 uninstall pyqt5
It worked seamlessly for me.
I am new to Mac, have always used windows and I am confused on how to install wxPython. I downloaded the .dmg file from the website, and it contained three files:
a pkg file, a readme, and an uninstall.py
I opened the pkg file, went through the steps, and Im not sure where it installed after it said "Installation Complete"
Also, I did the import wx in idle, which caused a stacktrace error.
Thanks.
From personal experience on installing wxPython on both Windows 7 and Mac OSX, I found restarting the computer helps out after installation and stacktrace errors appearing in the Shell upon 'import wx'. Sounds simple enough, but it worked for me. If no errors appear after 'import wx', that means wxPython installed correctly. To add to bouke's answer above, the current way to install Python 2.7 via homebrew in Terminal:
brew install python
To install wxPython:
brew install wxpython
At least for development, I would suggest to install (python and) wx using homebrew. It will install version 2.9 and you're ensured that Apple-provided system libraries remain untouched.
am trying desperately to get OpenCV to work on Windows 7. I download and installed it, and it didn't work, I got
ImportError: No module named opencv
when I tried to run one of the samples. I google my problem and got only random solutions that don't work. Can anybody guide me in installing it, or know where i can get a clear installation guide design for a programming noob.
As of OpenCV 2.2.0, the package name for the Python bindings is "cv".The old bindings named "opencv" are not maintained any longer. You might have to adjust your code. See http://opencv.willowgarage.com/wiki/PythonInterface.
The official OpenCV installer does not install the Python bindings into your Python directory. There should be a Python2.7 directory inside your OpenCV 2.2.0 installation directory. Copy the whole Lib folder from OpenCV\Python2.7\ to C:\Python27\ and make sure your OpenCV\bin directory is in the Windows DLL search path.
Alternatively use the opencv-python installers at http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv.
I have posted a very simple method to install OpenCV 2.4 for Python in Windows here : Install OpenCV in Windows for Python
It is just as simple as copy and paste. Hope it will be useful for future viewers.
Download Python, Numpy, OpenCV from their official sites.
Extract OpenCV (will be extracted to a folder opencv)
Copy ..\opencv\build\python\x86\2.7\cv2.pyd
Paste it in C:\Python27\Lib\site-packages
Open Python IDLE or terminal, and type
>>> import cv2
If no errors shown, it is OK.
UPDATE (Thanks to dana for this info):
If you are using the VideoCapture feature, you must copy opencv_ffmpeg.dll into your path as well. See: https://stackoverflow.com/a/11703998/1134940
I have posted an entry to setup OpenCV for Python in Windows:
http://luugiathuy.com/2011/02/setup-opencv-for-python/
Hope it helps.
Actually you can use x64 and Python 2.7. This is just not delivered in the standard OpenCV installer. If you build the libraries from the source (http://docs.opencv.org/trunk/doc/tutorials/introduction/windows_install/windows_install.html) or you use the opencv-python from cgohlke's comment, it works just fine.
download the opencv 2.2 version from https://sourceforge.net/projects/opencvlibrary/files/opencv-win/
install package.
then Copy cv2.pyd to C:/Python27/lib/site-packeges.
and it should work:
import cv2
open command prompt and run the following commands (assuming python 2.7):
cd c:\Python27\scripts\
pip install opencv-python
the above works for me for python 2.7 on windows 10 64 bit
One thing that needs to be mentioned. You have to use the x86 version of Python 2.7. OpenCV doesn't support Python x64. I banged my head on this for a bit until I figured that out.
That said, follow the steps in Abid Rahman K's answer. And as Antimony said, you'll need to do a 'from cv2 import cv'
Installing OpenCV on Windows 7 for Python 2.7