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# test scoping rules
# explicit global variable
a = 1
def f():
global a
global a, a # should be able to redefine as global
a = 2
f()
print(a)
# explicit nonlocal variable
def f():
a = 1
def g():
nonlocal a
nonlocal a, a # should be able to redefine as nonlocal
a = 2
g()
return a
print(f())
# nonlocal at inner-inner level (h)
def f():
x = 1
def g():
def h():
nonlocal x
return x
return h
return g
print(f()()())
# nonlocal declared at outer level (g), and referenced by inner level (h)
def f():
x = 1
def g():
nonlocal x
def h():
return x
return h
return g
print(f()()())
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