fix: remove ctypes.WinDLL preload — use only os.add_dll_directory
ctypes.WinDLL uses LoadLibraryW which does NOT search user DLL dirs registered via os.add_dll_directory/AddDllDirectory. It was throwing FileNotFoundError and blocking the import before tesserocr was ever tried. Python 3.8+ loads .pyd files with LOAD_LIBRARY_SEARCH_USER_DIRS which DOES search user-registered dirs for the pyd and all its transitive DLL dependencies. os.add_dll_directory(Library\bin) alone is sufficient. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
This commit is contained in:
alex
co-authored by
Claude Sonnet 4.6
Claude Sonnet 4.6
parent
d9383cc164
commit
77ad97022e
+5
-2
@@ -104,14 +104,17 @@ echo Installing tesserocr wheel...
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"%PYTHON%" -m pip install --force-reinstall "%~dp0dependencies\tesserocr-2.5.2-cp310-cp310-win_amd64.whl" >nul 2>&1
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:: --- Smoke test: import key dependencies ---
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:: Note: os.add_dll_directory (not ctypes.WinDLL) is the correct mechanism.
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:: Python 3.8+ loads .pyd files with LOAD_LIBRARY_SEARCH_USER_DIRS which
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:: searches user-registered dirs for the pyd AND all its transitive deps.
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echo.
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echo Verifying dependencies...
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"%PYTHON%" -c "import os,sys,ctypes;dirs=[d for d in [os.path.join(sys.prefix,'Library',x) for x in ['bin','mingw-w64\\bin','usr\\bin']] if os.path.isdir(d)];[os.add_dll_directory(d) for d in dirs];os.environ.__setitem__('PATH',os.pathsep.join(dirs)+os.pathsep+os.environ.get('PATH',''));t=os.path.join(sys.prefix,'Library','bin','tesseract51.dll');ctypes.WinDLL(t) if os.path.isfile(t) else None;import cv2,mss,numpy,tesserocr,discord,transitions,rapidfuzz" >nul 2>&1
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"%PYTHON%" -c "import os,sys;[os.add_dll_directory(d) for d in [os.path.join(sys.prefix,'Library',x) for x in ['bin','mingw-w64\\bin','usr\\bin']] if os.path.isdir(d)];import cv2,mss,numpy,tesserocr,discord,transitions,rapidfuzz" >nul 2>&1
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if %errorlevel% neq 0 (
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echo.
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echo WARNING: Dependency check failed. Running diagnostics...
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echo.
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"%PYTHON%" -c "import os,sys,ctypes; lb=os.path.join(sys.prefix,'Library','bin'); dlls=[f for f in (os.listdir(lb) if os.path.isdir(lb) else []) if any(k in f.lower() for k in ['tess','lepton'])]; print(' Tesseract DLLs in Library/bin:',dlls or 'NONE'); dirs=[d for d in [os.path.join(sys.prefix,'Library',x) for x in ['bin','mingw-w64\\bin','usr\\bin']] if os.path.isdir(d)]; [os.add_dll_directory(d) for d in dirs]; os.environ.__setitem__('PATH',os.pathsep.join(dirs)+os.pathsep+os.environ.get('PATH','')); t=os.path.join(lb,'tesseract51.dll'); r=ctypes.WinDLL(t) if os.path.isfile(t) else 'missing'; print(' ctypes tesseract51.dll:',type(r).__name__); __import__('tesserocr'); print(' tesserocr import: OK')" 2>&1
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"%PYTHON%" -c "import os,sys; lb=os.path.join(sys.prefix,'Library','bin'); dlls=[f for f in (os.listdir(lb) if os.path.isdir(lb) else []) if any(k in f.lower() for k in ['tess','lepton'])]; print(' Tesseract DLLs in Library/bin:',dlls or 'NONE'); [os.add_dll_directory(d) for d in [os.path.join(sys.prefix,'Library',x) for x in ['bin','mingw-w64\\bin','usr\\bin']] if os.path.isdir(d)]; import tesserocr; print(' tesserocr import: OK')" 2>&1
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echo.
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echo *** Do NOT run "pip install tesserocr" manually - it builds from source and
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echo *** will always fail on Windows. Re-run install.bat to fix dependencies.
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+8
-19
@@ -1,28 +1,17 @@
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import os
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import sys
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if os.name == 'nt':
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import ctypes
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# Collect all conda DLL dirs that exist
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_conda_dll_dirs = [d for d in [
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# Python 3.8+ loads .pyd files with LOAD_LIBRARY_SEARCH_USER_DIRS, which
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# searches directories registered via os.add_dll_directory() — including
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# all transitive DLL dependencies. This is the correct mechanism for
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# making tesserocr find tesseract51.dll and leptonica without conda activate.
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for _d in [
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os.path.join(sys.prefix, 'Library', 'bin'),
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os.path.join(sys.prefix, 'Library', 'mingw-w64', 'bin'),
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os.path.join(sys.prefix, 'Library', 'usr', 'bin'),
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] if os.path.isdir(d)]
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# 1) os.add_dll_directory: lets Python find tesserocr's direct deps when
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# loading the .pyd via LOAD_LIBRARY_SEARCH_USER_DIRS.
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for _d in _conda_dll_dirs:
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os.add_dll_directory(_d)
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# 2) Prepend to PATH: when ctypes.WinDLL loads tesseract51.dll by absolute
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# path, Windows resolves *that DLL's* own transitive deps (leptonica,
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# zlib, libpng, …) using the standard search order: app-dir → System32
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# → Windows-dir → cwd → PATH. Those libs live in Library\bin, not
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# System32, so without PATH they won't be found.
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os.environ['PATH'] = os.pathsep.join(_conda_dll_dirs) + os.pathsep + os.environ.get('PATH', '')
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# 3) Pre-load tesseract51.dll now (PATH is set, so all its deps resolve).
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# Once it's in the DLL cache the .pyd import below reuses it.
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_tess = os.path.join(sys.prefix, 'Library', 'bin', 'tesseract51.dll')
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if os.path.isfile(_tess):
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ctypes.WinDLL(_tess)
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]:
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if os.path.isdir(_d):
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os.add_dll_directory(_d)
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from tesserocr import PyTessBaseAPI, OEM
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import numpy as np
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import cv2
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+6
-11
@@ -1,22 +1,17 @@
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# Fix: On Windows, Python 3.8+ requires os.add_dll_directory for conda-forge DLLs
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# that tesserocr depends on (tesseract51.dll, leptonica-1.78.0.dll).
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# This must run BEFORE any import that might trigger tesserocr loading.
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# os.add_dll_directory registers dirs with LOAD_LIBRARY_SEARCH_USER_DIRS,
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# which applies to the .pyd and all its transitive DLL dependencies.
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import os, sys
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if sys.platform == "win32":
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import ctypes
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_bundled = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "conda_env", "Library", "bin")
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_conda_dll_dirs = [d for d in [
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_bundled,
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for _d in [
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os.path.join(sys.prefix, "Library", "bin"),
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os.path.join(sys.prefix, "Library", "mingw-w64", "bin"),
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os.path.join(sys.prefix, "Library", "usr", "bin"),
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] if os.path.isdir(d)]
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for _d in _conda_dll_dirs:
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os.add_dll_directory(_d)
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os.environ['PATH'] = os.pathsep.join(_conda_dll_dirs) + os.pathsep + os.environ.get('PATH', '')
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_tess = os.path.join(sys.prefix, "Library", "bin", "tesseract51.dll")
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if os.path.isfile(_tess):
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ctypes.WinDLL(_tess)
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]:
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if os.path.isdir(_d):
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os.add_dll_directory(_d)
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from dataclasses import dataclass
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from input_layer import keyboard
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+5
-9
@@ -1,18 +1,14 @@
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# Fix: On Windows, Python 3.8+ requires os.add_dll_directory for conda-forge DLLs
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# that tesserocr depends on (tesseract51.dll, leptonica-1.78.0.dll).
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import os, sys
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if sys.platform == "win32":
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import ctypes
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_conda_dll_dirs = [d for d in [
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for _d in [
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os.path.join(sys.prefix, "Library", "bin"),
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os.path.join(sys.prefix, "Library", "mingw-w64", "bin"),
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os.path.join(sys.prefix, "Library", "usr", "bin"),
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] if os.path.isdir(d)]
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for _d in _conda_dll_dirs:
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os.add_dll_directory(_d)
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os.environ['PATH'] = os.pathsep.join(_conda_dll_dirs) + os.pathsep + os.environ.get('PATH', '')
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_tess = os.path.join(sys.prefix, "Library", "bin", "tesseract51.dll")
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if os.path.isfile(_tess):
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ctypes.WinDLL(_tess)
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]:
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if os.path.isdir(_d):
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os.add_dll_directory(_d)
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from beautifultable import BeautifulTable
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import logging
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