Strings in Python

Strings are an essential data type in Python that represent a sequence of characters. Whether you're working with text data, processing user input, or manipulating strings, having a solid understanding of string operations in Python is crucial.

In this module, we'll learn about strings in Python, exploring their properties, common operations, and useful methods.

Additionally, we will also go through some code examples to illustrate their usage and highlight their versatility. So, let's get started!

In Python, strings can be created by enclosing characters within single quotes (''), double quotes ("") or triple quotes ("""). Here are a few examples:

 >>> single_quoted = 'Hello, world!'
 >>> double_quoted = "Python is awesome!"
 >>> triple_quoted = """This is a multi-line string."""

Strings in Python are zero-indexed, meaning each character in the string can be accessed by its position. We can use indexing and slicing to extract specific characters or substrings from a string. Here's an example:

 >>> my_string = "Hello, Python!"
 >>> print(my_string[0])
 >>> # Output: 'H'
 >>> print(my_string[7:13])
 >> # Output: 'Python'
 >>> print(my_string[-1])
 >>> # Output: '!'

In the example above, we are extracting specific characters of the string by making use of their positions in the string such as H at 0, this is known as indexing.

Now Slicing would be when we extracted the word Python in the second example by using positions 7-13 it is located at.