import os os.add_dll_directory(r"C:\path\to\folder\containing\dll") # Python 3.8+ from pyzbar import pyzbar Or set the PATH environment variable inside your script:
from pyzbar import pyzbar pyzbar.LIBZBAR_PATH = r"C:\full\path\to\libzbar-64.dll" ZBar may depend on the Visual C++ runtime. Download and install the latest Microsoft Visual C++ Redistributable for Visual Studio 2015-2022 (x64 version) from Microsoft’s official website. 5. Reinstall pyzbar (or the wrapper library) Sometimes the Python wrapper is outdated. Reinstall it:
If you work with barcode or QR code processing in Python (using libraries like pyzbar , zbarlight , or pylibdmtx ), you may have encountered a frustrating runtime error:
If you follow the steps above, your barcode reading script will run without further DLL‑related interruptions.