The Python string method .upper() returns the string with all lowercase characters converted to uppercase.

The Python string method .title() returns the string in title case. With title case, the first character of each word is capitalized while the rest of the characters are lowercase.

The Python string method .split() will split a string into a list of items.

If an argument is passed to the method, that value is used as the delimiter on which to split the string.

If no argument is passed, the default behavior is to split on whitespace.

In Python, the .join() method takes an array of strings and joins them together with a separator, or delimiter.

It is a way to concatenate string array elements into one string.

In Python, the join() function can be used to concatenate a list of strings together to create a new string on the desired delimiter. The array is passed in as an argument.

In Python, strings can be edited with the .strip() method. .strip() removes a given character or substring from the left and right of a string. It takes a character or substring as an argument, and returns a copy of the given string with that argument removed. If no argument is provided, whitespace is stripped from either side of the string.

.strip() will remove all of the given argument from the left and right of the string, until there is a mismatch.

The .replace() method is used to replace the occurence of the first argument with the second argument within the string.

The first argument is the old substring to be replaced, and the second argument is the new substring that will replace every occurence of the first one within the string.

The Python string method .find() returns the index of the first occurrence of the string passed as the argument. It returns -1 if no occurrence is found.

The Python string method .format() replaces empty brace ({}) placeholders in the string with its arguments.

If keywords are specified within the placeholders, they are replaced with the corresponding named arguments to the method.

In computer science, sequences of characters are referred to as strings. Strings can be any length and can include any character such as letters, numbers, symbols, and whitespace (spaces, tabs, new lines).

Python strings can be indexed using the same notation as lists, since strings are lists of characters. A single character can be accessed with bracket notation ([index]), or a substring can be accessed using slicing ([start:end]).

Indexing with negative numbers counts from the end of the string.

To combine the content of two strings into a single string, Python provides the + operator. This process of joining strings is called concatenation.

In Python, the built in function len() calculates the length of objects. It can be used to compute the length of strings, lists, sets, and other countable objects!

The Python built-in len() function can be used to determine the number of items in an object, such as for getting the length of a string or the number of elements in a list.

The Python built-in len() function returns the number of items in an iterable object. Since strings are iterable, len() can be used to determine the length of a string, which is the number of characters in the string.

When indexing into a string in Python, if you try to access an index that doesn’t exist, an IndexError is generated. For example, the following code would create an IndexError:

Strings are immutable in Python. This means that once a string has been defined, it can’t be changed.

There are no mutating methods for strings. This is unlike data types like lists, which can be modified once they are created.

Backslashes (\) are used to escape characters in a Python string.

For instance, to print a string with quotation marks, the given code snippet can be used.

To iterate through a string in Python, “for…in” notation is used.

In Python, the in syntax is used to determine if a letter or a substring exists in a string. It returns True if a match is found, otherwise False is returned.