Python Str

Python str

Created By: chatGPT

In Python, a string is a sequence of characters enclosed within either single quotes (') or double quotes ("). This flexibility allows for easy manipulation and formatting of text data. Here’s a quick overview of how you can work with strings in Python.

string1 = 'Hello, World!'
string2 = "Python is awesome!"

Concatenation refers to joining two strings together. In Python, this can be accomplished using the + operator.

greeting = string1 + ' This is a string tutorial.'
print(greeting)

To access individual characters of a string, you can use indexing. Python uses zero-based indexing, which means the first character is at index 0.

first_char = string1[0]
print(first_char)  # Output: H

Slicing enables you to extract a portion of a string. You can specify a start and end index with the colon : syntax.

substring = string1[7:12]
print(substring)  # Output: World

You can also find the length of a string using the built-in len() function.

length = len(string2)
print(length)  # Output: 21

To convert a string to all uppercase or lowercase, use the upper() and lower() methods respectively.

upper_string = string2.upper()
lower_string = string2.lower()
print(upper_string)  # Output: PYTHON IS AWESOME!
print(lower_string)  # Output: python is awesome!

Inserting variables into strings can be done through f-strings (formatted string literals) which make it easy to combine text and variable values.

name = 'John'
formatted_string = f'Hello, {name}!'
print(formatted_string)  # Output: Hello, John!

Finally, escaping special characters can be done using a backslash (\). This is useful for including quotes within a string.

escaped_string = 'He said, \'Python is great!\''
print(escaped_string)  # Output: He said, 'Python is great!'