Python Camelot / Ghostscript "wrong architecture" error

I have encountered an error that takes me beyond my de-bugging capabilities. Camelot's usage of Ghostscript seems to have found an executable of wrong architecture.

Steps taken:

1. brew install Ghostscript
2. checked to see if Ghostscript's executable could be found, as per the docs, it could not.
3. added /opt/homebrew/bin and /opt/homebrew/lib to appropriate paths (I think?)
4. as per the resolution of error #282 on Camelot's GitHub I changed camelot/camelot/ext/ghostscript/_gsprint.py Line 256

libgs = ctypes.util.find_library("gs") to libgs = distutils.spawn.find_executable("gs")

5. Checked dependencies again, with the new (above) code. Success. /opt/homebrew/bin/gs
6. python3.9 -m pip install camelot-py
7. Try to run Camelot with Ghostscript. Error shown below.

I should note, the gs in location /opt/homebrew/bin/gs appears to be an alias, not sure if that matters, but it stands to reason it would throw an exception. HOWEVER, the next two "finds" conveyed in the error, /opt/homebrew/bin/gs and /opt/homebrew/Cellar/ghostscript/9.53.3_1/bin/gs are both proper executables as far as I can tell.

Common sense tells me that if I were using Windows, I'd have a 64-bit vs 32-bit problem... but I am using MacOS, which I am unfamiliar with.

MacOS -- Apple Silicon M1 -- Python 3.9 -- brew installed Ghostscript -- pip installed camelot-py -- attempted via Jupiter notebook

edit -- also should note that Python 2.7 was a base install that came with the MacBook and its suggested that it not be removed. which python or python -- version returns the 2.7 version, not the 3.9 version I run.

---------------------------------------------------------------------------  OSError                                   Traceback (most recent call last)  /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/ext/ghostscript/_gsprint.py in <module>      259     try:  --> 260         libgs = cdll.LoadLibrary("libgs.so")      261     except OSError:    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ctypes/__init__.py in LoadLibrary(self, name)      451     def LoadLibrary(self, name):  --> 452         return self._dlltype(name)      453     /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ctypes/__init__.py in __init__(self, name, mode, handle, use_errno, use_last_error, winmode)      373         if handle is None:  --> 374             self._handle = _dlopen(self._name, mode)      375         else:    OSError: dlopen(libgs.so, 6): image not found    During handling of the above exception, another exception occurred:    OSError                                   Traceback (most recent call last)  <ipython-input-4-3a80516ee21f> in <module>        1 file = r"/Users/joe_kiefner/Documents/Projects/Migration Station/Data_Lake/Arkansas/AR_12_10_2020.pdf"        2   ----> 3 tables = camelot.read_pdf(file, flavor = 'lattice', pages='5')        4         5 t_df = tables[0].df    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/io.py in read_pdf(filepath, pages, password, flavor, suppress_stdout, layout_kwargs, **kwargs)      111         p = PDFHandler(filepath, pages=pages, password=password)      112         kwargs = remove_extra(kwargs, flavor=flavor)  --> 113         tables = p.parse(      114             flavor=flavor,      115             suppress_stdout=suppress_stdout,    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/handlers.py in parse(self, flavor, suppress_stdout, layout_kwargs, **kwargs)      169             parser = Lattice(**kwargs) if flavor == "lattice" else Stream(**kwargs)      170             for p in pages:  --> 171                 t = parser.extract_tables(      172                     p, suppress_stdout=suppress_stdout, layout_kwargs=layout_kwargs      173                 )    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/parsers/lattice.py in extract_tables(self, filename, suppress_stdout, layout_kwargs)      400             return []      401   --> 402         self._generate_image()      403         self._generate_table_bbox()      404     /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/parsers/lattice.py in _generate_image(self)      209       210     def _generate_image(self):  --> 211         from ..ext.ghostscript import Ghostscript      212       213         self.imagename = "".join([self.rootname, ".png"])    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/ext/ghostscript/__init__.py in <module>       22 #       23   ---> 24 from . import _gsprint as gs       25        26     /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/camelot/ext/ghostscript/_gsprint.py in <module>      274         if not libgs:      275             raise RuntimeError("Please make sure that Ghostscript is installed")  --> 276         libgs = cdll.LoadLibrary(libgs)      277       278 del __win32_finddll    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ctypes/__init__.py in LoadLibrary(self, name)      450       451     def LoadLibrary(self, name):  --> 452         return self._dlltype(name)      453       454     __class_getitem__ = classmethod(_types.GenericAlias)    /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/ctypes/__init__.py in __init__(self, name, mode, handle, use_errno, use_last_error, winmode)      372       373         if handle is None:  --> 374             self._handle = _dlopen(self._name, mode)      375         else:      376             self._handle = handle    OSError: dlopen(/opt/homebrew/bin/gs, 6): no suitable image found.  Did find:      /opt/homebrew/bin/gs: mach-o, but wrong architecture      /opt/homebrew/Cellar/ghostscript/9.53.3_1/bin/gs: mach-o, but wrong architecture  

https://stackoverflow.com/questions/65819425/python-camelot-ghostscript-wrong-architecture-error January 21, 2021 at 08:05AM