You may need to read text files and do some formatting of those strings.

With formatting, it means that you may also need to replace a certain portion of the string with another string.

Let us assume that we have a sentence and want to replace all the occurrences of the word i with I.

To do that, we are not going to rely on some heavy regular expression, but use the method replace()

sentence = "i can learn programming and journaling"

To do that replacement, we can just call the method replace():

sentence.replace("i", "I")

That’s basically it.

I hope you find this useful.