When importing Cartopy ImportError: DLL load failed while importing trace: The specified module could not be found

Question

我在活动的虚拟环境中使用 pip 安装了 Christoph Gohlke 的预建轮 Cartopy‑0.20.2‑cp39‑cp39‑win_amd64.whl。环境使用的是Python 3.9.5。尝试导入 Cartopy 时，我收到以下错误消息。这以前可以工作，现在不再工作了，我不明白为什么。有谁知道可能是什么问题或我遗漏了什么？

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
Input In [4], in <cell line: 1>()
----> 1 import cartopy
      2 import cartopy.crs as ccrs
      3 import cartopy.io.img_tiles as cimgt

File ~\Downloads\GitHub\Project\venv\lib\site-packages\cartopy\__init__.py:110, in <module>
    105     pass
    108 # Commonly used sub-modules. Imported here to provide end-user
    109 # convenience.
--> 110 import cartopy.crs
    111 import cartopy.feature

File ~\Downloads\GitHub\Project\venv\lib\site-packages\cartopy\crs.py:27, in <module>
     24 from pyproj.exceptions import ProjError
     25 from shapely.prepared import prep
---> 27 import cartopy.trace
     30 try:
     31     # https://github.com/pyproj4/pyproj/pull/912
     32     from pyproj.crs import CustomConstructorCRS as _CRS

ImportError: DLL load failed while importing trace: The specified module could not be found.

Answer 1

正如 cgohlke in the comments, installing the wheels of shapely and pyproj 在他的网站上提到的那样解决了这个问题。如果库已经安装，使用 --force-reinstall 覆盖现有安装。

When importing Cartopy ImportError: DLL load failed while importing trace: The specified module could not be found

When importing Cartopy ImportError: DLL load failed while importing trace: The specified module could not be found

python

cartopy