micropython/tests/basics/with_raise.py

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# test with when context manager raises in __enter__/__exit__
class CtxMgr:
def __init__(self, id):
self.id = id
def __enter__(self):
print("__enter__", self.id)
if 10 <= self.id < 20:
raise Exception('enter', self.id)
return self
def __exit__(self, a, b, c):
print("__exit__", self.id, repr(a), repr(b))
if 15 <= self.id < 25:
raise Exception('exit', self.id)
# no raising
try:
with CtxMgr(1):
pass
except Exception as e:
print(e)
# raise in enter
try:
with CtxMgr(10):
pass
except Exception as e:
print(e)
# raise in enter and exit
try:
with CtxMgr(15):
pass
except Exception as e:
print(e)
# raise in exit
try:
with CtxMgr(20):
pass
except Exception as e:
print(e)