Welcome to PyCSFex (Python Crystal Structure Factor Extensible), a Python 3 package for rapid calculation of X-ray structure factors of complex crystals. Our code will be available soon
Sutter, J. P., Pittard, J., Filik, J. & Baron, A. Q. R. (2022). J. Appl. Cryst. 55, 1011-1028. https://doi.org/10.1107/S1600576722005945