raise exception in python
raise Exception('I know Python!') # Don't! If you catch, likely to hide bugs.
raise exception in python
raise Exception('I know Python!') # Don't! If you catch, likely to hide bugs.
python raise TypeError
def prefill(n,v):
try:
n = int(n)
except ValueError:
raise TypeError("{0} is invalid".format(n))
else:
return [v] * n
python raise exception
# this raises a "NameError"
>>> raise NameError('HiThere')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: HiThere
python: raise error
class MyError(TypeError):
pass
raise MyError('An error happened')
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