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print(exec("def foo(): return 42"))
print(foo())
d = {}
exec("def bar(): return 84", d)
print(d["bar"]())
# passing None/dict as args to globals/locals
foo = 11
exec('print(foo)')
exec('print(foo)', None)
exec('print(foo)', {'foo':3}, None)
exec('print(foo)', None, {'foo':3})
exec('print(foo)', None, {'bar':3})
exec('print(foo)', {'bar':3}, locals())
try:
exec('print(foo)', {'bar':3}, None)
except NameError:
print('NameError')
# invalid arg passed to globals
try:
exec('print(1)', 'foo')
except TypeError:
print('TypeError')
# invalid arg passed to locals
try:
exec('print(1)', None, 123)
except TypeError:
print('TypeError')
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