Python String Formatting
String formatting in Python allows you to create dynamic strings by embedding variables and expressions within other strings.
1. Using the % Operator
The % operator is used for string formatting in Python. You can use placeholders within a string and pass values to replace those placeholders.
Example:
name = "Alice"
age = 30
message = "My name is %s and I am %d years old." % (name, age)
print(message)Output: My name is Alice and I am 30 years old.
2. Using the format() Method
The format() method provides a more flexible way of formatting strings. You can use placeholders or named placeholders within a string and pass values using positional or keyword arguments.
Example:
name = "Bob"
age = 25
message = "My name is {} and I am {} years old.".format(name, age)
print(message)Output: My name is Bob and I am 25 years old.
3. Using f-strings (Python 3.6+)
f-strings provide a more concise and readable way of formatting strings in Python. You can embed variables and expressions directly within a string by prefixing it with f or F.
Example:
name = "Charlie"
age = 35
message = f"My name is {name} and I am {age} years old."
print(message)Output: My name is Charlie and I am 35 years old.
Conclusion
String formatting in Python provides various methods for creating dynamic strings with embedded variables and expressions. Whether using the % operator, format() method, or f-strings, you can choose the most suitable approach based on readability and flexibility.