python-3.x - 问 : How to fix the missing dependancies in pyzbar

Question

我目前正在 Windows 10 上通过 anaconda 和 python 3.8.5 使用spyder，并且我正在尝试使用 pyzbar 包来制作条形码读取器。当我尝试运行脚本时，在尝试运行 from pyzbar.pyzbar import debug 和 from pyzbar import pyzbar 时收到此错误消息:

  Traceback (most recent call last):

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\zbar_library.py", line 58, in load
    dependencies, libzbar = load_objects(Path(''))

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\zbar_library.py", line 50, in load_objects
    deps = [

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\zbar_library.py", line 51, in <listcomp>
    cdll.LoadLibrary(str(directory.joinpath(dep)))

  File "C:\Users\norinhan\Anaconda3\lib\ctypes\__init__.py", line 459, in LoadLibrary
    return self._dlltype(name)

  File "C:\Users\norinhan\Anaconda3\lib\ctypes\__init__.py", line 381, in __init__
    self._handle = _dlopen(self._name, mode)

FileNotFoundError: Could not find module 'libiconv.dll' (or one of its dependencies). Try using the full path with constructor syntax.


During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "<ipython-input-1-95ae0761f4b5>", line 1, in <module>
    from pyzbar.pyzbar import decode

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\pyzbar.py", line 7, in <module>
    from .wrapper import (

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\wrapper.py", line 139, in <module>
    zbar_version = zbar_function(

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\wrapper.py", line 136, in zbar_function
    return prototype((fname, load_libzbar()))

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\wrapper.py", line 115, in load_libzbar
    libzbar, dependencies = zbar_library.load()

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\zbar_library.py", line 60, in load
    dependencies, libzbar = load_objects(Path(__file__).parent)

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\zbar_library.py", line 50, in load_objects
    deps = [

  File "C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\zbar_library.py", line 51, in <listcomp>
    cdll.LoadLibrary(str(directory.joinpath(dep)))

  File "C:\Users\norinhan\Anaconda3\lib\ctypes\__init__.py", line 459, in LoadLibrary
    return self._dlltype(name)

  File "C:\Users\norinhan\Anaconda3\lib\ctypes\__init__.py", line 381, in __init__
    self._handle = _dlopen(self._name, mode)

FileNotFoundError: Could not find module 'C:\Users\norinhan\Anaconda3\lib\site-packages\pyzbar\libiconv.dll' (or one of its dependencies). Try using the full path with constructor syntax.

当尝试运行import pyzbar时，它将编译，但无法访问任何函数。当我尝试时，我收到此消息:

Traceback (most recent call last):

  File "<ipython-input-3-26272af93b8a>", line 1, in <module>
    pyzbar.pyzbar.decode()

AttributeError: module 'pyzbar' has no attribute 'pyzbar'

我查了一下documentation for pyzbar on github其中指出“Zbar DLL 包含在 Windows Python 轮子中”，但在任何地方都没有找到这一点。我发现的最接近“Windows Python 轮子”的是 the wheel package其中不包含有关 pyzbar 的任何信息。

关于如何解决这个问题有什么建议吗？

Answer 1

访问https://pypi.org/project/pyzbar/#files下载 pyzbar-0.1.8-py2.py3-none-win_amd64.whl。

您可以在wheel包中找到所有DLL文件。