Circular (or cyclic) imports in Python

Question

What will happen if two modules import each other?

To generalize the problem, what about the cyclic imports in Python?

Answer 1

I got an example here that struck me!

foo.py

import bar

class gX(object):
    g = 10

bar.py

from foo import gX

o = gX()

main.py

import foo
import bar

print "all done"

At the command line: $ python main.py

Traceback (most recent call last):
  File "m.py", line 1, in 
    import foo
  File "/home/xolve/foo.py", line 1, in 
    import bar
  File "/home/xolve/bar.py", line 1, in 
    from foo import gX
ImportError: cannot import name gX