micropython/tests/basics/builtin_reversed.py

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# test the builtin reverse() function
# list
print(list(reversed([])))
print(list(reversed([1])))
print(list(reversed([1, 2, 3])))
# tuple
print(list(reversed(())))
print(list(reversed((1, 2, 3))))
# string
for c in reversed('ab'):
print(c)
# bytes
for b in reversed(b'1234'):
print(b)
# range
for i in reversed(range(3)):
print(i)
# user object
class A:
def __init__(self):
pass
def __len__(self):
return 3
def __getitem__(self, pos):
return pos + 1
for a in reversed(A()):
print(a)
# user object with __reversed__
class B:
def __reversed__(self):
return [1, 2, 3]
print(reversed(B()))