Answers for "raise value error"

raise exception in python

raise Exception('I know Python!') # Don't! If you catch, likely to hide bugs.

raise exception in python

#raise exception
raise ValueError('A very specific bad thing happened.')

raise valueerror

raise ValueError('A very specific bad thing happened.')

python raise exception

# this raises a "NameError"

>>> raise NameError('HiThere')

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: HiThere

catch error data with except python

import sys
try:
	S = 1/0 #Create Error
except: # catch *all* exceptions
    e = sys.exc_info()
    print(e) # (Exception Type, Exception Value, TraceBack)

############
#    OR    #
############
try:
	S = 1/0
except ZeroDivisionError as e:
    print(e) # ZeroDivisionError('division by zero')

python: raise error

class MyError(TypeError):
    pass

raise MyError('An error happened')