Python scoping

a.py

import d

x = 10


def f(n):
    return x + n

print 'f(2) called directly in module a [a.x = 10]'
print f(2)

print 'f(2) called indirectly in module a by passing to d.h [d.x = 1000]'
print d.h(f)

b.py

import a


x = 100


def g(func):
    return func(2)


print 'a.f(2) called indirectly in module b by passing it to g [b.x = 100]'
print g(a.f)

c.py

import b
import a

print 'a.f(2) called indirectly in module c by passing it to b.g [no c.x]'
print b.g(a.f)

d.py

x = 1000


def h(func):
    return func(2)