Hello,
Can someone provide me with an error checking example about an x
variable that needs to be number only? I used something like:
def useridf():
print ""
print "WARNING: If you don't understand why this must be unique,
exit and read the manual."
print ""
userid = input("x : ")
I know that "input" accepts only numbers, but I don't want the program
to break if someone puts other chars in it. I want to, print "Only
numbers are accepted." which is easy. But still I can't understand how
to do the check using if/elif/else statements.
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