[Python Wpg] Import a module using a string
Sydney Weidman
syd at plug.ca
Mon Dec 3 19:06:31 EST 2007
This was not obvious to me, so I thought I'd mention it for the benefit
of anyone else who might be trying to do this. I got a bit tired of
using the ConfigParser for loading options and decided that I should
just import a module that could be specified on the command line. But
how can I import a module the name of which I don't know until my script
runs?
I should have guessed that Python has a way to do this. You use the
__import__ builtin function, like so:
import sys
myconfigfile = sys.argv[1]
try:
config = __import__(myconfigfile)
for i in config.__dict__:
print i
except ImportError:
print "Unable to import configuration file %s" % (myconfigfile,)
See help(__import__) for more information.
Hope this helps others!
Have a great holiday season!
- Syd
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