尝试使此代码正常工作:
import cairosvg
import os
path = "D:/PyProjects/Bla/Temp"
os.chdir(path)
cairosvg.svg2pdf(url='Pic.svg', write_to='image.pdf')
但是会遇到与此post类似的错误:
Traceback (most recent call last):
File "D:/work/lean_python/pdf/other.py", line 2, in <module>
import cairosvg
File "D:\env_python352\lib\site-packages\cairosvg\__init__.py", line 29, in <module>
from . import surface
File "D:\env_python352\lib\site-packages\cairosvg\surface.py", line 24, in <module>
import cairocffi as cairo
File "D:\env_python352\lib\site-packages\cairocffi\__init__.py", line 46, in <module>
cairo = dlopen(ffi, 'cairo', 'cairo-2')
File "D:\env_python352\lib\site-packages\cairocffi\__init__.py", line 43, in dlopen
raise OSError("dlopen() failed to load a library: %s" % ' / '.join(names))
OSError: dlopen() failed to load a library: cairo / cairo-2
帖子提到:
CairoSVG (the python library and bindings) needs Cairo (The C library, part of GTK+) to run. It appears you don't have it an it's headers installed on your system.
所以我按照步骤1 - 5描述了here。我现在有cairo头文件:
C:\msys64\mingw64\include\cairo
我还安装了另一个来源推荐的pycairo:
pip install pycairo-1.15.2-cp36-cp36m-win_amd64.whl
我仍然遇到上述错误。有什么想法吗?
答案 0 :(得分:2)
以下变通办法适用于我:
python -m pip install cairosvg
)import cairosvg
。OSError: no library called "cairo" was found
):uniconvertor-2.0rc4-win64_headless.msi
https://sk1project.net/uc2/download/ libcairo-2.dll
的安装位置。C:\path\cairo\dlls\libcairo-2.dll
import os
os.environ['path'] += r';C:\path\cairo\dlls'
import cairosvg
现在应该可以成功工作了。(假设您正在运行64位版本的Python,否则请使用win32_headless.msi
)
答案 1 :(得分:1)
我只是没有让cairosvg工作。我找到了一种使用svglib包将svg转换为png的替代方法。
from svglib.svglib import svg2rlg
from reportlab.graphics import renderPDF, renderPM
import os
path = "D:/Bla/Temp"
os.chdir(path)
drawing = svg2rlg("Pic.svg")
renderPM.drawToFile(drawing, "Pic.png")
答案 2 :(得分:1)
请使用libcairo-2.dll
检查ctypes.util
的路径。
就我而言,它是旧软件的目录,名为Graphviz
。
python
>>> import ctypes.util
>>> path = ctypes.util.find_library('libcairo-2')
>>> print(path)
C:\Program Files (x86)\Graphviz 2.28\bin\libcairo-2.dll
卸载Graphviz
后。
python
>>> import ctypes.util
>>> path = ctypes.util.find_library('libcairo-2')
>>> print(path)
C:\msys64\mingw64\bin\libcairo-2.dll