Fastest Way To Reverse A String In Python

I was able to come up with two different ways to reverse a string in Python. Commonsense dictates that the more lines of code the slower it runs. I made the following lines of cod

Solution 1:

I see a difference.

First of all, what is up with map(lambda x: x, st)? What is the purpose?

Use the timeit module to test your code:

$ python -m timeit '"".join(reversed("abcdefghijklmnopqrstuvwxyz"))'
1000000 loops, best of 3: 0.586 usec per loop
$ python -m timeit '"abcdefghijklmnopqrstuvwxyz"[::-1]'           
10000000 loops, best of 3: 0.0715 usec per loop

As you can see, the slice is ~8x faster on my machine for this particular input. It's also more concise.

Solution 2:

s=input("enter string")
print(s[::-1])