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joshua korir1,445 Points
by using "ValueError as err" makes err a pointer to whatever value ValueError contains?
use of "as"
Steven Parker221,513 Points
It sounds like you have the basic idea. The variable named after "as" (in the example here it is "err") is known as the exception argument. It refers to an exception instance that carries data including a message that can be printed out.
For more details, see Errors and Exceptions in the Python documentation.