string functions python

title: exploring essential string functions in python with code examples
introduction:
strings are a fundamental data type in python, representing sequences of characters. python provides a rich set of built-in string functions that allow you to manipulate and process strings efficiently. in this tutorial, we'll explore some essential string functions in python, along with code examples to demonstrate their usage.
len() - finding the length of a string:
the len() function returns the number of characters in a string.
lower() and upper() - changing case:
the lower() function converts all characters in a string to lowercase, while upper() converts them to uppercase.
strip() - removing whitespace:
the strip() function removes leading and trailing whitespaces from a string.
replace() - replacing substrings:
the replace() function replaces occurrences of a specified substring with another.
split() - splitting a string:
the split() function splits a string into a list of substrings based on a specified delimiter.
join() - joining strings:
the join() function joins elements of an iterable (e.g., a list) into a single string using a specified separator.
find() and count() - searching in a string:
the find() function returns the index of the first occurrence of a substring, while count() returns the number of occurrences.

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