I want to use one of two functions in a script:

def func_one(): pass
def func_two(): pass

func = getattr(x, 'func_'+number)
func()

'x' in getattr() should be a reference to the "__main__" module, right?
 How to get it?  The 'if' clause should work here.  I am just curious if
we can use the above method.

def func_two():
    return "two = 2"

if __name__ == '__main__':
    import __main__
    func = getattr(__main__, 'func_' + 'two')
    print func()

    import test
    print getattr(test, 'func_' + 'one')()

which works, but importing yourself can be tricky. Try taking the "if
__name__" test out and running the script and see what happens.

This is probably a better way to solve your problem that doesn't rely on
the module importing itself:

def func_one():
    return "one = 1"

def func_two():
    return "two = 2"

funcs = {'one': func_one, 'two': func_two}

print funcs['one']

Of course, in your particular case, the code can be simplified to
avoid getattr() altogether:

func = globals()['func_'+number]

import __main__
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