Answers for "how to raise an error"

python error handling

try:
	#insert code here
except:
	#insert code that will run if the above code runs into an error.
except ValueError:
	#insert code that will run if the above code runs into a specific error.
	#(For example, a ValueError)

python: raise error

class MyError(TypeError):
    pass

raise MyError('An error happened')