Problem running the testing installation snippet

[JoseVillanuevaMolina]

Hello I got an error after running the testing installation snippet. Any idea?

OSError Traceback (most recent call last)
~\anaconda3\envs\micasense\lib\site-packages\pyzbar\zbar_library.py in load()
57 try:
---> 58 dependencies, libzbar = load_objects(Path(''))
59 except OSError:

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\zbar_library.py in load_objects(directory)
53 ]
---> 54 libzbar = cdll.LoadLibrary(str(directory.joinpath(fname)))
55 return deps, libzbar

~\anaconda3\envs\micasense\lib\ctypes_init_.py in LoadLibrary(self, name)
441 def LoadLibrary(self, name):
--> 442 return self._dlltype(name)
443

~\anaconda3\envs\micasense\lib\ctypes_init_.py in init(self, name, mode, handle, use_errno, use_last_error)
363 if handle is None:
--> 364 self._handle = _dlopen(self._name, mode)
365 else:

OSError: [WinError 126] No se puede encontrar el módulo especificado

During handling of the above exception, another exception occurred:

OSError Traceback (most recent call last)
in
3 import os, glob
4 import numpy as np
----> 5 import pyzbar.pyzbar as pyzbar
6 import matplotlib.pyplot as plt
7 import mapboxgl

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\pyzbar.py in
5 from .locations import bounding_box, convex_hull, Point, Rect
6 from .pyzbar_error import PyZbarError
----> 7 from .wrapper import (
8 zbar_image_scanner_set_config,
9 zbar_image_scanner_create, zbar_image_scanner_destroy,

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\wrapper.py in
141 c_int,
142 c_uint_p, # major,
--> 143 c_uint_p, # minor
144 )
145

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\wrapper.py in zbar_function(fname, restype, *args)
134 """
135 prototype = CFUNCTYPE(restype, *args)
--> 136 return prototype((fname, load_libzbar()))
137
138

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\wrapper.py in load_libzbar()
113 global EXTERNAL_DEPENDENCIES
114 if not LIBZBAR:
--> 115 libzbar, dependencies = zbar_library.load()
116 LIBZBAR = libzbar
117 EXTERNAL_DEPENDENCIES = [LIBZBAR] + dependencies

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\zbar_library.py in load()
58 dependencies, libzbar = load_objects(Path(''))
59 except OSError:
---> 60 dependencies, libzbar = load_objects(Path(file).parent)
61 else:
62 # Assume a shared library on the path

~\anaconda3\envs\micasense\lib\site-packages\pyzbar\zbar_library.py in load_objects(directory)
52 for dep in dependencies
53 ]
---> 54 libzbar = cdll.LoadLibrary(str(directory.joinpath(fname)))
55 return deps, libzbar
56

~\anaconda3\envs\micasense\lib\ctypes_init_.py in LoadLibrary(self, name)
440
441 def LoadLibrary(self, name):
--> 442 return self._dlltype(name)
443
444 cdll = LibraryLoader(CDLL)

~\anaconda3\envs\micasense\lib\ctypes_init_.py in init(self, name, mode, handle, use_errno, use_last_error)
362
363 if handle is None:
--> 364 self._handle = _dlopen(self._name, mode)
365 else:
366 self._handle = handle

OSError: [WinError 126] No se puede encontrar el módulo especificado

[JoseVillanuevaMolina]

If I comment the code #import pyzbar.pyzbar as pyzbar, the error disappears.

[poynting]

Seems like the libzbar library isn't properly installed.

What OS?
What actions have you taken?
Were there any errors during those actions?

[poynting]

Also, check the pyzbar page, there is information there such as:

[JoseVillanuevaMolina]

My OS is Windows 10. I downloaded the environment and ran the setup test code.

[philipperemy]

One dep is missing in the conda requirements.

https://anaconda.org/conda-forge/zbar

[philipperemy]

You can either install it at the OS level or in conda.

conda install -c conda-forge pyzbar

[poynting]

It's been a while, but last time I tried it didn't work across all platforms from conda. If someone wants to test it on Win/Linux/Mac and make a PR, I'll merge it.

…

On Sat, Nov 13, 2021, 6:01 PM Philippe Rémy ***@***.***> wrote: You can either install it at the OS level or in conda. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#130 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABSNZUYQCOBFLHOJYYS4HOLUL4KATANCNFSM4T2PBV3A> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[poynting]

Yes, I understand the idea. The last time I tested doing it that way, it did not work. I don't recall the specific issue, but I believe it was on Mac or Linux where it failed. If someone will confirm that it does work now across platforms, and update the notebooks and documentation, I will be happy to merge the PR. Otherwise it will need to wait until I have some time in the office to validate across platforms.

…

On Sun, Nov 14, 2021, 1:23 AM Philippe Rémy ***@***.***> wrote: @poynting <https://github.com/poynting> I guess you can make it work for everyone in the easiest way, I guess you can add it as a dep to conda (rather than relying on a manual installation such as brew). — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#130 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABSNZUYFG5QVSRPQX4LGSBTUL55XHANCNFSM4T2PBV3A> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.