Uses of Python's “from” keyword?

Question

Are there any other uses for Python\'s \"from\" keyword aside from import statements?

Answer 1

With the finalization of PEP 3134, the from keyword can be used when an exception is generated (raise) as a consequence of catching an exception in a try-except block.

try:
    
except  as e:
    raise  from e

The keyword from allows to keep track of the caught exception e in the new excaption raised. The exception e will be stored in the attribute __cause__ of the new exception.