I just fixed a bug in a two year old python program and now I'm having big trouble getting it to compile again. I simply cannot get Python, Cairo, wx and distutils to work together.
On OSX I managed to get Python 2.7 to import Cairo and WX but py2app does not work. The error is something about unknown architecture.
On Windows 7 I have not been able to successfully import cairo. I installed py2cairo and put the libcairo-2.dll in Windows/System32 but still get an import error. I even copied msvcr90.dll to System32 but still no luck.
Does anyone have a combination of Python, wx, Py2cairo, Cairo and distutils that just works? I need Python 2.6 or 2.7 32 bit on OSX and Windows.
I got it to work on OSX by installing an older version of XCode form the SnowLeopard DVD.
You also have to be very careful with paths to data files because py2app puts everything into a zip file.
py2exe was worse because it did not copy dynamically loaded modules and one dependency from pytz into the repo and needed some ugly hacks in setup.py.
I ended up using cairo-1.10.2, libpng-1.2.49 and pixman-0.20.2
Related
I cannot get autocomplete working for OpenCV (Python) on Windows.
According to Abid's instructions here, I pasted the cv2.pyd file in the C:\Python27\Lib\site-packages.
In the Python code, I import as follows:
import cv2.cv as cv
I have also installed numpy, and it created its own folder in site-packages unlike OpenCV (which I've pasted directly into site-packages).
With this setup, the code executes without any problems, even when OpenCV methods are called.
But I have not been able to get autocomplete to work. I have tried to get it to work on Sublime Text 2 (with SublimeCodeIntel) and PyCharm. In both IDEs, autocomplete works for the numpy import, but fails for the OpenCV import.
I'm using OpenCV 2.4.6, and Python 2.7 (32 bit).
Any possible solutions?
The reason it's not working is because you're using a .pyd file, which is essentially the same as a compiled .dll. Autocomplete works by reading the source .py files, which are plain text. Try installing the OpenCV and Intel Math Kernel Library optimized NumPy packages from Christoph Gohlke's Python Extension Packages for Windows repository, which is frequently updated and a must-use resource for anyone who does any kind of scientific Python computing on Windows. Make sure you delete the cv2.pyd and numpy directories from site-packages first. These new packages will install the .py source files needed by the autocomplete engine in Sublime Text.
EDIT
OK, so I wrote the above because it worked well for a bunch of other packages. I'm a Python 3 guy, and I never installed OpenCV from Gohlke because it only has Python 2 bindings. After reading #CrazyCoder's comment below, I booted up Win7, and indeed he's absolutely correct (and I should have realized this before) - since OpenCV is written in C/C++, the only .py file included in the Gohlke package is cv.py, whose entire contents are as follows:
from cv2.cv import *
The rest is contained in cv2.pyd and a bunch of .dlls. The full OpenCV Windows distribution from opencv.org is a 291 MB download, which expands to 3 GB, and the few .py files in there are involved in building OpenCV, and aren't any good for autocomplete purposes. So, unfortunately, I don't know if there's a solution to your problem at the moment. Just keep the docs handy, and perhaps check out OpenCV Computer Vision with Python from Packt/O'Reilly, published in April 2013.
I've had the same issue with PyCharm when building a custom version of OpenCV on windows. Here is what I did to fix it:
OpenCV made a folder in Python site-packages like so:
opencv site-packages
So what you need to do is just add the python-3.9 folder to your interpreter.
File
Settings...
Python interpreter
Three dots icon next to your interpreter -> Show all...
Select your interpreter and click on the "Show paths for selected interpreter" icon
Add the folder inside the cv2 site-packages
Now import the cv2 module normally.
The best way to solve all the problems of OPENCV-PYTHON is by uninstalling it and reinstalling it.
Even I faced the same problem.
I fixed it by:
python -m pip uninstall Opencv-python
Then I reinstalled it by using a lower version. But unfortunately, I did not know the versions of opencv; So by using a small trick you can get it by running:
python -m pip install opencv-python==
and you will get an error similar to this:
ERROR: Could not find a version that satisfies the requirement opencv-python== (from versions: 3.4.0.14, 3.4.10.37, 3.4.11.39, 3.4.11.41, 3.4.11.43, 3.4.11.45, 3.4.13.47, 3.4.15.55, 3.4.16.57, 3.4.16.59, 3.4.17.61, 3.4.17.63, 4.3.0.38, 4.4.0.40, 4.4.0.42, 4.4.0.44, 4.4.0.46, 4.5.1.48, 4.5.3.56, 4.5.4.58, 4.5.4.60, 4.5.5.62, 4.5.5.64) ERROR: No matching distribution found for opencv-python==
Here you can see all the versions of opencv-python; choose any one (but not the latest as the error occurs due the latest version of opencv-python. install it by using:
pip install opencv-python==3.4.17.61 (You can choose your version, but this version solved the issue for me)
then enjoy your coding....
Even AUTO-COMPLETE error in opencv-python gets solved.
HAPPY CODING
I'm using CXFreeze with PySide (QT). I get an error:
cx_Freeze: Python error in main script.
myscript.py line 33, in
File ExtensionLoader_Pyside_QtGUI.py, line 11, in
Import Error: DLL load failed: The specified module could not be found
When running a fresh install of Windows server 2008.
I'm running the frozen EXE package (with the folder). It seems to work on my own system and other systems. What might be the issue?
After reading, online, I tried to replace the Qt4Gui file, but this didn't solve the issue.
Python version is 2.7
Based on your Import Error: DLL load failed it is most likely an installation issue causing the missing DLL. To figure our exactly which DLL you are missing, use http://www.dependencywalker.com/ Run the .exe and open the .pyd file for File ExtensionLoader_Pyside_QtGUI.py and it will show you exactly which DLL's are missing and more importantly the locations where they should be. You can probably then track down the missing DLL online.
there are known issues with pyside 1.2.0 and cxFreeze. All should be fixed in development version (available on git repo). Please build the PySide from latest sources yourself or wait for PySide version 1.2.1. Build instructions are here [1].
[1] https://github.com/PySide/pyside-setup#building-pyside-on-a-windows-system
I used Py2exe instead of CXFreeze and it worked perfectly.
Also, apparently Python requires the MS Visual C++ Dependency Files:
http://www.microsoft.com/en-us/download/details.aspx?id=29
So any bundling needs that as well, if it's a fresh install. (Although I think they are now bundled with newer Windows versions.)
Other Notes:
In my experience, sometimes you should try CXFreeze, Py2EXE and PyInstaller quickly and see if one works best. As ideal as CXFreeze is re: cross platform, it just isn't going to happen perfectly.
Also, while I don't know if this was a factor, I set up a Windows 2000 Pro virtual machine and ran Py2exe on that. That was to ensure compatibility for all older Windows versions, and seemed to work well. (NOTE: Many things won't even run on Win2000 anymore so be careful that your other tools and libraries will run on it.)
Finally, be extra careful to match the bit level (32 vs 64) of all your libraries, and your Python install itself. If you have 32-bit python, ensure that your PySide, CXFreeze and any other libraries you use are 32-bit. (Or 64-bit if you're using 64-bit python.)
I installed TkTreeCtrl 2.4.1 (written in c), as well as TkTreectrl 1.0 ( written in python), which wraps the original c library.
When I try to create any treectrl objects in Python, I get the error:
_tkinter.TclError: can't find package treectrl
I'm pretty new to Python, but I'd guess that the Python wrapper code can't find the c library.
When I installed TkTreeCtrl(c) it installed itself in '/usr/lib/treectrl2.4.1' as a .dylib file.
I've never used a .dylib before, but some googling told me to add the directory it was in to the environment variable 'DYLD_LIBRARY_PATH'.
I did that, but no luck. I'm not sure I'm even know what my problem is, so any help would be greatly appreciated!
I'm running Lion and Python 2.7. Python was installed using MacPorts.
For its Python ports, MacPorts currently builds and installs its own X11-based Tcl and Tk ports. It looks like you would need to be careful when building TkTreeCtrl to specify the correct locations to ./configure for the MacPorts provided Tcl, Tk, and X11 libraries and include files. See ./configure --help for the names of the options. You should find the libraries and include files under /opt/local/, the default install location for MacPorts files.
There may be an easier option, though. It appears that the ActiveTcl distributions for Tcl/Tk include TkTreeCtrl. If you use a Python that links with ActiveTcl, you would just need to install the Python TkTreectrl module, which is straightforward. On Lion, a free (though not open source) download of ActiveTcl 8.5 is available here which will automatically be used with the python.org 2.7.2 64-bit installer for OS X available here. ActiveState also has its own Python distribution for OS X. There's more information about some of the quirks of Python and Tcl/Tk on OS X here. Note that the ActiveTcl is a more native implementation on OS X; it is not X11-based.
I was writing a code which uses wxPython and comtypes. I have python 2.7 installed on my machine (Windows) along with wxPython, comtypes and py2exe. while trying to build it I got the following error:
error: MSVCP90.dll: No such file or directory
So, I did research I came to know about two solutions:
1. Copy Microsoft.VC90.CRT.manifest and msvcp90.dll to your machine and prepare your setup like as follows:
from distutils.core import setup
import py2exe
from glob import glob
data_files=[("Microsoft.VC90.CRT", glob(r'c:\shared_dlls*.*'))]
setup(data_files=data_files, console=['main.pyw'])
2. Use Python 2.5 along with wxPython, comtypes and py2exe
Now, I have following questions:
In first case:
a. Do I need to have Visual Studio license in order to use these files? or that can be used without any worries.
b. What if I compile it using aforementioned method? Does it still require MSVC90.dll on the user machine to execute? I think - No. Please correct me if I'm wrong. I want to remove any dependency and give user an exe which the user can directly execute without any dependency.
In Second case:
As I have Python_2.7 installed on my machine along with aforementioned modules. I would like to know can I install Python 2.5 on the same machine? Can they co-exist? If yes, do I need to install another copy of wxPython, comtypes and py2exe for this.
Please suggest me what is the best solution. How should I proceed? It's kind of blocking me.
Thanks in advance!
Python 2.5 and 2.7 (and all other versions of Python) co-exist very well. You may need to change your path to use the correct version of Python.
You will need to install the Python 2.5 builds of wxPython and py2exe. You will also need to install comtypes for Python 2.5. That installer will detect your Python installations by checking the registry.
I simply downloaded MSVCP90.dll file from here: http://www.dllme.com/dll/files/msvcp90_dll.html
and then pasted it into Python27\DLLs. It worked after that.
Did you try to install Visual C++ redistribuables?
I think you don't need a VS license for this.
I've been trying to install PyQt 4.7 on Vista, but I am getting an ImportError when I try to do: from PyQt4 import QtCore, QtGui.
ImportError: DLL load failed: The specified module could not be found.
I've checked my System Path, and C:\Python31\Lib\site-packages\PyQt4\bin is on there.
I can't run any of the examples, but the Designer, Assistant and Linguist run fine.
I am using ActivePython 3.1, if that makes any difference. And I haven't had any previous version of PyQt installed.
Edit:
I've copied the QtCore4 and GtGui4 dlls to C:\Python31\Lib\site-packages\PyQt4. That fixes some of the examples, but I still can't use the example browser.
Are you sure there is a \bin directory for your version of PyQt?
I am running PyQt 4.4, and all my binaries are right in:
C:\Python31\Lib\site-packages\PyQt4
Which is what I have my path pointing too.
It sounds like PyQt4 was installed improperly... did you run this?
python setup.py install
There shouldn't be a bin there...
Just wanted to chime in that I had the same problem on a WinXP install of:
python 2.7
Qt 4.7.1 (10.05)
PyQt 4.8.1
I used the windows installer version of all 3 of those items.
Copying the contents of the C:\Python27\Lib\site-packages\PyQt4\bin folder up to the main PyQt folder (C:\Python27\Lib\site-packages\PyQt4) stopped the 'dll not found' errors that python was throwing.
Also chiming in. I installed both python 2.6 and PyQt 4.8.3 on a Windows 7 machine using the windows installers (I did NOT run 'python setup.py install').
I tried to run spyder (which requires PyQt 4.4 or greater) and failed because it couldn't find the PyQt .dlls. I copied all the .dlls from the \Lib\site-packages\PyQt4\bin folder to the \Lib\site-packages\PyQt4 folder, and spyder launches just fine.
PyQt installation also depends on the version of python installed on your platform.Python3.+ is incompatible with Python version < 3.x.
I was facing the same problem as I have Python 2.7 installed on my machine but I downloaded the latest binary which was PyQt-Py3.2-x86-gpl-4.9.exe. If you see here the binary has python version also mentioned in name after PyQt which is Py3.2. I uninstalled PyQt and installed PyQt-Py2.7-x86-gpl-4.9.exe which points to Python 2.7 and it fixed the problem.
Probably they could have mentioned the naming convention online or in some documentation to be more simpler.
I had the same problem. I got my program running from within Eclipse but when I tried running it directly from the command line I still got the same error.
I solved it by renaming the C:\Users\Me\AppData\Roaming\Python\Python27\site-packages\PyQt4 directory. (I'm guessing leftovers from a previous PyQt install)
I am using ActivePython.
I think there are at least two possible error conditions
1. ImportError: DLL load failed: The specified module could not be found.
then you have to check your PyQT version is comptible with your python. In other words, if you use python 3.3, then you can only use PyQT for python3.3 and python 3.3 will not work with PyQT for python3.4
This was the problem I met. I solved it with re-install it
2. Import Error: DLL load failed: %1 then something strange on a different encoding Win32.
then it would be a OS problem. If you use 32bit Python then you have to use 32bit PyQt, so do 64bit
Here's how I could fix those errors on Windows 7:
Get the PyQt4 wheel from
http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyqt4.
Make sure that the version is exactly the same as your Python version (i.e. Python 3.3 doesn't work with PyQT for Python 3.4). Also make sure to download the 64bit version if you are on a 64bit machine and vice versa.
Extract the wheel with 7zip
Rename the PyQt4-4.11.4.data (or similar) directory to PyQt4
Go to PyQt4\purelib\PyQt4\ and move everything to the root PyQt4 folder. You can delete the purelib folder now
Copy the whole PyQt4 folder to your Python interpreters 'site-packages' folder (e.g. C:\Python34\Lib\site-packages)
Go to PyQt4\data\Lib\site-packages and move all the files to C:\Python34\Lib\site-packages\
In my case I needed MSVCP140.dll. I have solved this problem by dowloading Visual C++ Redistributable for Visual Studio 2015:
https://www.microsoft.com/en-us/download/details.aspx?id=48145
Got this solution from MSVCP140.dll missing
I am using Pyqt4 and Python 3.6 in Windows7.