I, as it will soon be obvious, am a total newb when it comes to Python.
I am running python version 3.5 on Windows 10, 64 bit.
I installed the PyAutoGui module for a small project I am working on. At first, everything worked perfectly. But now it appears that PyAutoGui is crashing when it clicks. I suspect that it's because PyAutoGui is only intended for use up to Python 3.4.
In order to rectify this, I downloaded Python 3.4. Unfortunately, however, when I try to install PyAutoGui (using pip install pyautogui), it tells me that it's already been installed because it sees it in the Python 3.5 folder.
My question is this: How do I install PyAutoGui in Python 3.4 with it already installed in Python 3.5?
Assume that I know virtually nothing about how to install a module manually without using pip
Thanks in advance!
If you have multiple versions of Python installed you need to find your versions and rename them and their Pips.
In windows the path is, C:\\Users\USERNAME\AppData\Local\Programs\Python\Python3x-32. The x should be replaced with the Python version and USERNAME with your username. On Mac it's located in /usr/local/bin/python. On Linux it should be in /usr/bin/python. The location might vary depending on OS and Python version.
Rename the files python.exe/python and pip.exe/pip so that each file is different. I named mine python35.exe, python2.exe and python.exe(for 3.5, 2.7 and 3.6).
Now when you execute your pip command use, pip34 install pyautogui or whatever you named the file.
Or if you really want to you can go the painful way of renaming all the path variables, but I won't explain that here.
I have installed iPython using pip in OS X 10.10, and it gave me the "ipython" and "ipython2" commands, which run great, but which use OS X's default python version 2.7.9. I downloaded and installed the latest release of Python3.4 and can load it with the command "python3," but cannot find a way to get iPython to use this version of python. The iPython Web site states the package can be used with python versions 3.3 and above, but I cannot find any instruction on how to change the default python version used.
So far I have found that the jupyter package for iPython has a kernel specification in /usr/local/share/jupyter/kernels/, which is just a folder called "python2" containing a json file that points to the system's python 2.7.6, but altering this to point to the new python3.4 installation does not work. My guess is this configuration is for the ipython notebook.
I've also tried the approach here: ipython reads wrong python version
In doing so I've duplicated the ipython2 command in /user/local/bin/ and edited it to use the python3 interpreter located at /Library/Frameworks/Python.framework/Versions/3.4/bin/python3, however, this gives me an error "ImportError: No module named 'IPython'," which suggests the python3 installation does not have ipython installed.
To tackle this, I've tried uninstalling ipython and reinstalling it using pip, but it just targets the system's Python 2.7 installation and does nothing for python3.
Does anyone know how to configure iPython to use a different python version, or even install a separate ipython installation for python3? Ultimately it would be nice to quickly switch back and forth depending on my needs.
I just found the answer. In essence, this stems from not understanding the python installation layout and how resources are separated between installed interpreters. It appears each python version will have its own repository of tools, and the current "pip" command I had installed on the system was mapped for use with python 2.7, so all libraries, tools, and other details it managed where available only to python 2.7. This included iPython.
I thought that installing python3 would make all these libraries available to the new interpreter by default, but it appears the system keeps them all separate (which makes sense). The main issue here was continuing to use "pip" which targeted the old installation, instead of the new "pip3" command included with python3. By using pip3 to reinstall iPython, I was able to get iPython3 installed properly.
Unfortunately this setup means needing to re-download other libraries, but that's not too difficult.
It might seem like a trivial issue in hindsight, but this had me completely stuck. I hope this helps someone else in this situation.
My Mac came with Python 2.6.9 and 2.7.6 (the default 'Python') installed. I needed several modules from the SciPy stack and installed them using MacPorts:
py27-numpy
py27-scipy
py27-matplotlib
py27-pandas
Now for whatever reason this installed another Python version alongside the ones I already had, Python 2.7.8. All the packages only work with this one. When I start a new project in XCode and point it to this new instance, /usr/bin/python2.7, nothing works and I get
'/System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: can't open file '
I can make XCode work with the 2.7.6 version, /usr/bin/python, but then none of the packages I need are available.
Is there any way to either make XCode work with this other python instance, or to remove the 2.7.6 entirely and replace the default python with the new one?
The correct path to the MacPorts python is /opt/local/bin/python2.7. By using the MacPorts version of Python, you are ensured that all of the necessary dependencies are found. I was able to follow these instructions and get everything to work. The only catch was in step 16 I had to manually enter the path because /opt was not visible.
Alternatively, you could try adding the MacPorts library path to your PYTHONPATH. Just add
export PYTHONPATH=$PYTHONPATH:/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/
to your .bash_profile. I will warn you that when I tried mixing Pythons in the past I frequently got errors relating to trying to import wrong module.
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 )
I have recently been learning Python 3. I have had no problems on my netbook (32bit Windows 7) I with creating small simple programs. When I installed it on my netbook I had no problems, but now that I've been getting into it I want to install it on my desktop and I have one.
My desktop is a 64 bit OS running Windows 7. Like I did with my netbook, I went to download Python and install the 64 bit edition.
After installing it, I went to open up Python CLI and GUI and no luck. It gave me this error.
"The application was unable to start correctly (0xc000007b). Click OK to close the application"
I also tried reinstalling, but not luck.
I suspect a missing .dll but I am not completely sure. Does anyone know what is keeping me from opening Python and how do I fix it?. I want to resume my work as soon as possible.
That is the NTSTATUS error code for STATUS_INVALID_IMAGE_FORMAT. Almost invariably that means that the loaded is attempting to link a 32 bit DLL into a 64 bit process, or vice versa.
If you want to attempt to debug this then the tool of choice is Dependency Walker. You open the python.exe executable file in Dependency Walker and use the profile menu to start it up with logging of the load events. Somewhere along the way there will be a failure and you'll be able to see which module is causing that failure. That will hopefully point the way towards a resolution.
However, attempting to debug this may be a waste of time. It will probably better to uninstall the existing installation, and try to re-install. Perhaps picking a different Python distribution.
I note that you have selected a 64 bit version. Now, support for 64 bit extension modules is not as strong on 64 bit Python as on 32 bit Python. It does exist, but they modules can be harder to come by and install. You might consider installing a 32 bit Python next time round.
Please make sure that Python3.dll is the same version and the same architecture (32/64) with python.exe. I fixed this error via replacing it with 32bit version.
you should delete the old path of python in "Environment Variables" and enjoy ;)
As janne-karila mentioned, and for Python 3.5, Microsoft Visual Studio 2015 redistributable (in this case the 64 bit version)
This probably won't answer your question, but my answer is for a very specific case when you "Refresh Windows without affecting Files" to fix your Windows 8.1 PC.
If you do that, You'd get this error when you try to run Python after the windows refresh.
To fix this error, simply re-install PY at the same folder where your python was install before you refreshed windows. If you try to install it any other folder like username/appdata/... folder the PY installer would be stuck in initialization.
You may also get another error saying "api-ms-win-crt-runtime-l1-1-0.dll is missing". To fix, go to the windows.old folder and get the dll file ith the above name and paste it in the PY folder. Also like others have suggested, make sure Microsoft Visual Studio 2015 redistributable is installed.
Encountering this error after a windows refresh is so rare, that no one else seemed to have experienced according to google searches, so I though I share it here for that rare unlucky person.
Apparently the error code stands for STATUS_INVALID_IMAGE_FORMAT (source), and it looks like it's not specific to Python. You can try reinstalling the program, rebooting, running CHKDSK /r (source). It might also have something to do with the Microsoft Visual C++ redistributable package, as Janne Karila and this thread suggest.
This stackoverflow question also looks like it has some useful information.
I too faced this problem. So I uninstalled python3 64-bit version and installed 32-bit version, after that i am able to launch python3 in windows 8 successfully. (i have a 64-bit laptop).
Simply, download the last version of Microsoft Visual C++ redistributable package ..
I had the same problem ..
I have the same error found. Using dependency walker, I found tons of DLLs missing. Rather going for copying all the DLLs I went with virtual environment. It will create another environment for Python.
First, install python normally. Copy, the Python.exe path. In my case, it is
C:\Python\python
It will be used to install Python libraries. Then, using command prompt, I used pip to download and install virtualenv (Virtual environment). To do that, change the directory to where pip.exe is, which is in Scripts folder. Now, run the following to install virtualenv:
C:\Python\python pip install virtualenv
It will install Virtual environment.
Now, create a folder to hold virtual environment and change directory to that folder and run to create the following to create an environment:
virtualenv --no-site-packages [environment name]
It will create the Environment.
Now, change subdirectory to Scripts in the [environment name] folder. There is a activate file run it, in my case it is like:
C:\Python\virtualenv\env\Scripts activate
env is the [environment name] here.
If you activate it, every command will look like:
(env) C:\Python\python
This ends here. Now, you can install any python library using this. Do whatever, you want using Python.
Also, to deactivate the environment same deactivate.bat is in the scripts folder.
For me the issue was, I had installed 32 bit version on a 64 bit machine. Hope it helps someone out there.
Like many have said, Windows cannot load python.exe itself or one of its dependent DLLs because of INVALID_IMAGE_FORMAT:
python.exe is of unsupported bitness. 32bit on 64bit Windows is supported. 64bit on 32bit system is not (solution: install 32bit python, bye).
python.exe or one of its DLLs is corrupted (probably not)
one of the dependent DLLs is not of the same bitness as the EXE:
python.exe (say, 32bit) requires python*.dll (python3.dll or python27.dll). It installs that into Windows System32/SysWOW64 folder. The DLL is of correct bitness (32bit).
Something else overwrites that with 64-bit version, or places a 64-bit version somewhere in the search PATH.
When you run python.exe (32bit), Windows searches for python*.dll, and the first one it founds is the 64bit one. 32bit EXEs cannot normally load 64bit DLLs.
Typical examples:
TortoiseHg installs its own copy of python (both .exe and .dll) into its own folder and adds itself to PATH. The bitness can be different (say, 64bit) and usually matches platform bitness.
Another installation of Python with a different bitness somewhere else overwrites the DLL (it shouldn't, they have different System32s, but who knows)
Diagnostics:
Dependency Walker marks 64bit DLLs with 64bit icons. Verify that icons for python.exe and python*.dll match. Right click -> "Show full paths" to see where the DLL is taken from.
Simple solutions:
Maybe you have another, functioning copy of Python somewhere else? Check it.
Reinstall Python, preferably in the platform version (64bit for 64bit OS, 32bit for 32bit) Yeah, that's what many are saying, but now you know why this is needed.
Remove offenders from PATH. While this maaaay fix your Python, this will break the offenders and some (TortoiseHg explorer plugins) need the PATH. So maybe compromise with them and choose #2.
In my case I was installing both the 32 and 64 bit versions of the python msi. They both install to the same folder, c:\python32. I thought msi's would prevent those kinds of conflicts, but no.