How to execute code when a module is imported ?

[Arthas]

How I do it?

I wanna execute some code when a module is imported:

-- foo.py --
#!/usr/bin/env python

def codetoexecwhenloaded():
print "bar"
-- end of foo.py --

-- in console --

import foo

^ and then it should print "bar"

Thanks, Arthas
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