How to test a Python script with an input file filled with testcases?

Question

I\'m participating in online judge contests and I want to test my code with a .in file full of testcases to time my algorithm. How can I get my script to take input from this .i

Answer 1

So the script normally takes test cases from stdin, and now you want to test using test cases from a file?

If that is the case, use the < redirection operation on the cmd line:

my_script < testcases.in