I've just installed Python 2.7.8 (as default version) following these steps. I was using Python 2.7.6 before this. I have been importing modules such as pyglet, gasp and pygame normally. Now, I can't import any of these (whenever I try, I get
No module named (some module)
error). I haven't changed anything. Each of these are properly installed. I even removed (with all dependencies) and installed pyglet again, but problem remained. Please help.
Are you sure you are installing the modules under new Python installation directory?
You need to install all the modules for the new Python version.
Check under your Python2.7.8 installation directory <PYTHON2.7.8_INSTALL_DIR>\Lib\site-packages\ whether you have all the needed modules or not.
To install into the modules under the new Python, use the new easy_install.exe or pip.exe under <PYTHON2.7.8_INSTALL_DIR>\Scripts
Related
I had PyQt4 running fine with python2 on Ubuntu 12.04. I then installed python-PySide. But the installation test would give me a module not found error. Then I installed python3-PySide and it works fine. So obviously something to do with my environment paths, but I'm not sure what I need to do. I'm guessing PySide is automatically checking if python3 exists and if it does then it'll use it regardless. I need PySide to work with python2.7 because of Qt4.8 compatibility issues. Any suggestions?
some info about my system:
which python
/usr/bin/local/python
which python3
/usr/bin/python3
EDIT:
More details about installation test.
After installation, I bring up the python console and try import PySide, as follows:
python
import PySide
ImportError: No module name PySide
But it works fine for python3:
python3
import PySide
PySide.version
'1.1.2'
You have two independent Python 2.7 installations, one in /usr and one in /usr/local. (And that's on top of the Python 3.x installation you also have.)
This is bound to cause confusion, especially for novices. And it has caused exactly the kind of consuion it was bound to cause.
You've installed PySide into the /usr installation, so it ended up in /usr/lib/python2.7/dist-packages. If you run /usr/bin/python, that import PySide will probably work fine. (If not, see below.)
But the default thing called python and python2.7 on your PATH is the /usr/local installation, hence which python says /usr/local/bin/python, so it can't see PySide at all. So you need to get it installed for the other Python as well.
Unless you know that you need a second Python 2.7 in /usr/local for some reason, the simplest thing to do would be to scrap it. Don't uninstall it and reinstall it; just uninstall it. You've already got a Python 2.7 in /usr, and you don't need two of them.
If you really need to get PySide working with the second 2.7…
Since you still haven't explained how you've been installing PySide despite being asked repeatedly, I can't tell you exactly how to do that. But generally, the key is to make sure to use explicit paths for all Python programs (python itself, python-config, pip, easy_install, etc.) that you have to run. For example, if the docs or blog or voices in your head tell you to run easy_install at some step, run /usr/local/bin/easy_install instead. If there is no such program, then you need to install that. The fact that you already have /usr/bin/easy_install doesn't help—in fact, it hurts.
If you can get rid of the second Python, but that doesn't fix PySide yet, uninstall, rebuild, and reinstall PySide. Or, even simpler… PySide has pre-made, working binary Ubuntu packages for all of the major Python versions that have Ubuntu packages. Just install it that way.
I have been using PyCharm on Ubuntu to run some Python code, where in Edit Configurations I specified the interpreter path as /usr/bin/python2.7. The code uses the pygame module, and so to install this, I also ran sudo pip install pygame. Then I used import pygame in my Python script, and the file ran ok.
However, I now want to use Python 3.4. So, in PyCharm, I specified the interpreter path to be /usr/bin/python3.4. However, when I run the same file, I now get the error: ImportError: No module named 'pygame'.
Can somebody explain why this is happening? How can I get my Python 3.4 interpreter to find Pygame?
Thanks!
Each python installation has a separate set of libraries. Your python 3 does not know about Python 2 and its libraries. It seems the default pip command calls the python2 pip script. Run again the pip install, but with the python3 pip (look for it in your python3 folder, it is probably named pip3)
As others have pointed out, different Python installations will maintain their own independent set of libraries. Bear in mind that you can install packages from the same window that you use to change the interpreter in PyCharm for a project. You might find that more convenient if you're switching between interpreters.
You just click the green 'plus' icon to do so:
pygame has different releases for each version of Python.
As you have the Python 2.7 module and want to upgrade to Python 3.4, you'll need to reinstall pygame using Python 3.4 instead, you can using pip again or you can download files from here: http://www.pygame.org/download.shtml.
I installed Python 3.5.1 from www.python.org. Everything works great. Except that you can't install pandas using pip (it needs visualstudio to compile, which I don't have). So I installed Anaconda (www.continuum.io/downloads). Now I can see pandas as part of the list of installed modules, but when I run python programs I still get:
ImportError: No module named 'pandas'
How do I set up my environment to use the modules from Anaconda?
Note: I have Anaconda's home directory and Library/bin on my path, as well as Python's home directory. I do not have PYTHONPATH or PYTHONHOME set, and I know I have the correct privileges to see everything.
I have successfully installed pandas for a Windows 32 bit version Python 3.4 with pre-complied code (no Visual Studio required) using the website:
http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyyaml
There is link for Python 3.5 pre-complied code at this site as well, but I have not tested it.
Download the code you want to a directory on your machine.
Using your Windows CMD.exe, go to your python directory and enter:
Python -w pip install "YourDirectory/pandas-0.18.1-cp35-cp35m-win32.whl"
OR
Python -w pip install "YourDirectory/pandas-0.18.1-cp35-cp35m-win_amd64.whl
Choose the version based on the version of Python you have
have, 32 bit or 64 bit.
Good Luck!
Anaconda has included one version of Python with it. You have to change your system environment path with Anaconda's instead of the former one to avoid conflict. Also, if you want to make the whole process easy, it is recommended to use PyCharm, and it will ask you to choose the Python interpreter you want.
I am attempting to install IronPython. I downloaded the stable 2.7.5 installer from here:
http://ironpython.net/download/
I ran the installer and all is well. It is not located at:
C:\Program Files (x86)\IronPython 2.7
I have a previous installation of Python 2.7 from my ArcGIS installation, which packages and installs python along with it. My installation location for python is:
C:\Python27\ArcGIS10.2
So, when I test and:
import clr
I receive and error:
ImportError: No module named clr
My Environment Variable Path names are all correct.
I'm just wondering if python IDLE knows where to grab IronPython, or did I install wrong?
The name of the IronPython intepreter is ipy.exe. If you not starting this, you are not using IronPython. So you should see the application name in the window title and when starting the shell. When you use it in an IDE, you should tell the IDE that you are using IronPython, if it support it. Just setting some environment variables will not help. If you are targeting the correct directory and ipy.exe will be used, everything should work just fine.
I am fairly new to Python and trying to install the Pillow package on Windows 7. I downloaded and ran the MS Windows installer Pillow-2.2.1.win-amd64-py3.3.exe from here. It appeared to install fine. If I run the simple line of code:
from PIL import Image
directly from the Python interpreter, it runs fine. A help() on PIL gives me the package contents.
But when I try to run the same line of code from within a script, I get an ImportError: No module named PIL. What am I missing?
(Note that I've been able to import sys and import MySQLdb from within scripts just fine.)
Resolved: sure, enough, I'm running Python 2.7 when I run scripts. (I think I vaguely recall having to install an older version so I could interface with MySQL.) Thank you all for pointing out that I should check the version being used.
For third-party modules for Windows, my go-to resource is Christoph Gohlke's Python Extension Packages for Windows. You can find the latest version of Pillow here. Make sure you're working with the python.org version of Python.
As far as your specific error, it's hard to tell exactly without a traceback, but make sure your script is calling the correct version of Python. If you have also installed Python 2.7, for example, your script may be calling that instead of 3.3.
In such cases I'm simply printing the sys.path at the beginning of the script in trouble and comparing it with the one from the working python interpreter. In most cases I was running the script with a different python interpreter.
In my case , I was referring to wrong pip folder.
Changed virtual environment in pycharm to point to right pip folder to solve this issue
import sys
print ( sys.path )