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# test subclassing a native exception
class MyExc(Exception):
pass
e = MyExc(100, "Some error")
print(e)
print(repr(e))
print(e.args)
try:
raise MyExc("Some error", 1)
except MyExc as e:
print("Caught exception:", repr(e))
try:
raise MyExc("Some error2", 2)
except Exception as e:
print("Caught exception:", repr(e))
try:
raise MyExc("Some error2")
except:
print("Caught user exception")
class MyStopIteration(StopIteration):
pass
print(MyStopIteration().value)
print(MyStopIteration(1).value)
class Iter:
def __iter__(self):
return self
def __next__(self):
# This exception will stop the "yield from", with a value of 3
raise MyStopIteration(3)
def gen():
print((yield from Iter()))
return 4
try:
next(gen())
except StopIteration as er:
print(er.args)
class MyOSError(OSError):
pass
print(MyOSError().errno)
print(MyOSError(1, "msg").errno)
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