When I run the Django server, I see this problem !!
OSError: no library called "cairo" was found
no library called "libcairo-2" was found
cannot load library 'libcairo.so': error 0x7e
cannot load library 'libcairo.2.dylib': error 0x
cannot load library 'libcairo-2.dll': error 0x7e
WeasyPrint needs the Pango, cairo and GDK-PixBuf libraries. They are part of GTK+ (formerly known as GIMP Toolkit), and must be installed separately.
After installing GTK+ libraries, do :
python -m weasyprint http://weasyprint.org weasyprint.pdf
Installing GTK+ didn't work for me. I solved this problem using UniConverter2.0. My environments is
C:\Program Files\UniConvertor-2.0rc4\dlls)WeasyPrint needs the Pango, cairo and GDK-PixBuf libraries. They are part of GTK+ (formerly known as GIMP Toolkit), and must be installed separately.
After installing GTK+ libraries, do :
python -m weasyprint http://weasyprint.org weasyprint.pdf
Starting from Python 3.8, dll's need to be added separately. Added GTK+, MSYS2, Visual Studio C Compiler and Uniconverter. But, nothing seemed to work. Finally, got it working after putting the script for calling add_dll_directory.
import os
def set_dll_search_path():
# Python 3.8 no longer searches for DLLs in PATH, so we have to add
# everything in PATH manually. Note that unlike PATH add_dll_directory
# has no defined order, so if there are two cairo DLLs in PATH we
# might get a random one.
if os.name != "nt" or not hasattr(os, "add_dll_directory"):
return
for p in os.environ.get("PATH", "").split(os.pathsep):
try:
os.add_dll_directory(p)
except OSError:
pass
set_dll_search_path()
See the solution here:
https://www.programmersought.com/article/47674569357/
You will need to add a path if not added after installations:
C:\Program Files\GTK3-Runtime Win64\bin
I have been solving it many times this way.
If you are using a lightweight Linux Docker Image, it may not include GTK as said above, then, you can include it by adding in your Dockerfile
RUN apt-get update -y
RUN apt-get install python3-cffi python3-brotli libpango-1.0-0 libharfbuzz0b libpangoft2-1.0-0 libgtk-3-dev gcc -y
Where all those packages are recommended to be installed by weasyprint and GCC has the GTK.
Try this: https://cairocffi.readthedocs.io/en/stable/overview.html#installing-cairo-on-windows
And maybe this will work to: https://www.lfd.uci.edu/~gohlke/pythonlibs/#pycairo
Best option is instal cairocffi trough pipwin
pip install pipwin
pipwin install cairocffi
Ok I figure this out. you can have a 64 bit version of python that doesn't work. What I have found to work and this could change is the installing the 64 bit version of python from python's website, not from the Microsoft store!
python3 command-line alias. Just use python instead. –
Rosemaryrosemond Might be a bit late, but I just encoutered the same issue and:
Start here: https://weasyprint.readthedocs.io/en/stable/install.html#windows. Where you will find the links for the GTK Pack that contains the required DLLs.
In my case, I have a 64bit Python, so i use: "Download and run the latest gtk3-runtime-x.x.x-x-x-x-ts-win64.exe"
I did not change the installation directory
Once the installation is completed. I added the path to my variable paths.
I restarted the terminal, made sure I could locate the DLLs with : WHERE libcairo-2.dll. This retured C:\Program Files\GTK3-Runtime Win64\bin\libcairo-2.dll
Then I run python -m weasyprint http://weasyprint.org weasyprint.pdf
and got a few WARNINGs but they are just warnings :)
I have faced same error as well
I haved installed gtk as followed as gtk install in windows
Nothing worked
After that :
python -m pip install pycairo
solved the problem for me
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pip freezewould be useful here. How are you running your Django project? with manage.py? – Bale