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Suppose a program requires a password that is a combination of numbers and letters but is not key sensitive. However, the user input is received as a string with letters that can have arbitrary cases. What code can be used to validate user input, u_pass, against the actual password, a_pass?

u_pass.upper() == str(a_pass).upper()
u_pass == a_pass
u_pass == str(a_pass)
u_pass is a_pass

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Martebi

The code that can be used to validate user input, u_pass, against the actual password, a_pass is u_pass.upper() == str(a_pass).upper().

How do one validate user input?

The act of input validation is  also called data validation. This is said to be  the right testing of any input that has been supplied by a user or application.

Conclusively, In  Input validation, there is prevention in term of improperly formed data from entering into the information system.

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