[pabs3]

zxing-cpp has a Python wrapper that should work for that.

[marcjuul]

zxing does not have a usable datamatrix decoder last I checked. it's there but it's no good.

[pabs3]

I just tried the example zxing-cpp Python module wrapper script and it worked with datamatrix.png from the pylibdmtx test suite. Hmm, but read_datamatrix from pylibdmtx detects two values while zxing-cpp detects one.