Question

I know we could use exec to load a module ( from a string ) on-the-fly

e.g.

path  = 'A.B'
class = 'C'
exec( "from %s import %s" %(path, class) )

but how I could instantiate it as an object c? btw, is above the best way to load a module from a string? it does not look very safe. thanks

regards,
John

Answer 1

For python<=2.6, you can use the built-in __import__ function:

m = __import__('A.B', globals(), locals(), ['C'])
C = getattr(m, 'C')
c = C()