String Formatting

String formatting is a way to create formatted strings in Python, allowing you to insert variables, expressions, or other strings into a larger string.

Using the % Operator

One common method of string formatting in Python is using the % operator. For example, to insert a variable into a string:

name = 'Alice'
age = 30
message = 'Hello, %s! You are %d years old.' % (name, age)
print(message)

Output:
Hello, Alice! You are 30 years old.

Using the format() Method

Another method of string formatting is using the format() method. This method allows for more flexibility and readability. For example:

name = 'Alice'
age = 30
message = 'Hello, {}! You are {} years old.'.format(name, age)
print(message)

Output:
Hello, Alice! You are 30 years old.

Using F-Strings (Python 3.6+)

In Python 3.6 and later versions, you can use f-strings for string formatting, which provide a more concise and readable syntax:

name = 'Alice'
age = 30
message = f'Hello, {name}! You are {age} years old.'
print(message)

Output:
Hello, Alice! You are 30 years old.

Conclusion

String formatting in Python allows you to create formatted strings easily and efficiently. By using the % operator, format() method, or f-strings, you can insert variables and expressions into strings to create dynamic and readable output.