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Alex Rivera
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Say I get a random number between 1 and 127. I change the number to binary and remove the 0b from it with the following code: key_one= int(raw_input("Enter key (0 <= key <= 127): ")) if key_one in range(128): bin_key_one=bin(key_one)[2:] print bin_key_one else: print "You have to enter key (0 <= key <= 127)" Now I want to make it 7-characters long by padding the beginning with zeros as necessary. I think I need to use a for loop, but can someone show me how to do it?
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