26. String reversal
Use string indexing
to reverse a string, not a for loop or for-comprehension.
26.1. Don’t do this
1name = 'one-off coder'
2name = ''.join([name[i] for i in range(len(name) - 1, -1, -1)])
26.2. Do this
1name = 'one-off coder'
2name = name[::-1]