Reverse a string in Python

python string
oneself picture oneself · May 31, 2009 · Viewed 1.3M times · Source

There is no built in reverse function for Python's str object. What is the best way of implementing this method?

If supplying a very concise answer, please elaborate on its efficiency. For example, whether the str object is converted to a different object, etc.

Answer

Paolo Bergantino picture Paolo Bergantino · May 31, 2009

How about:

>>> 'hello world'[::-1]
'dlrow olleh'

This is extended slice syntax. It works by doing [begin:end:step] - by leaving begin and end off and specifying a step of -1, it reverses a string.

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