Functions with strings

Question

I am working pyhton on codecademy and I stucked in one part. The goal is this: "Define a function called reverse that takes a string 'text' and returns that string in reverse. You may not use reversed or [::-1] to help you with this." I did this one and it is not working like this:

t = raw_input("Enter: ")
def reverse(t):
 x = []
 for a in range(len(t)):
 x.append(t[len(t) - a - 1])
 print ''.join(x)

but when I do it like this it is working.

t = raw_input("Enter: ")
x = []
for a in range(len(t)):
 x.append(t[len(t) - a - 1])
print ''.join(x)

what is wrong with the first one?

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• kylieCatt: Possible duplicate of How can I reverse a list in python?
• Laurent LAPORTE: Is it homework? Please notice that Python in NOT C/C++ language. To reverse a text consider: "text"[::-1] => "txet".

Answer 1

The first does not work because, you're not calling your reverse function on t.

def reverse(t):
 x = []
 for a in range(len(t)):
 x.append(t[len(t)-a-1])
 return ''.join(x)
t = raw_input("Enter: ")
print(reverse(t))

In your example you're obtaining the input, but doing nothing with it.