How to reverse a string in Python
As there is no inbuilt function, if you are looking to know how to opposite a string in Python, you're going to need to use one of two McGyver recommendations. Fortunately, these are still pretty simple and do not take long at all to be told. Here's what you wish to know.
How to reverse a string in Python using slicing
The first way to opposite a string, is to use a slice that steps backward. Slices in Python permit you to return chunks of information from strings, tuples, and lists. This is useful if you ever want to get a few items from a list, or if you are looking to grab a chunk of a string.Usually, a slice is used in order to provide a selection akin to "4-7":
stringy = "Hello world"
print(stringy)
This will return "o worl". Remember that the first value in a string or list has the index "0".This is right for many programming languages. If we leave a host blank and just add a colon, then Python will refer to the primary or last value respectively.Also read: When to use lists rather than dictionaries in Python
We also can add a third number if we are looking to define the "step. " For instance:
print(string)
This will now show us the values 4-10, but will skip some other entry!
Which, needless to say, brings us the opposite step:
stringy = "Hello world"
print(stringy)
Combine these two ideas and you get a slice that moves backward throughout the whole string:
print(stringy)
This starts and ends at the start and end of the string respectively and moves backwards. There you've got you have got it: it really is how to opposite a string in Python!
How to reverse a string in Python manually
You could, alternatively, opposite your string manually. This can be useful if you ever want to check the values as you run during the string:
This method runs during the string in reverse, starting at the last position in the string.It then moves backward through each value, adding that value to a new string. The result's a new, reversed string.This method is a bit slower and more bulky, but it is also more bendy to fit your needs.Now you recognize not one but two strategies for how to opposite a string in Python!Let us know which other strategies you utilize in the feedback down below. And do not forget to take a look at our guide to the most effective online Python classes.