{"id":608,"date":"2024-11-28T07:05:17","date_gmt":"2024-11-28T07:05:17","guid":{"rendered":"https:\/\/techkubo.com\/python\/?p=608"},"modified":"2025-06-23T15:09:21","modified_gmt":"2025-06-23T15:09:21","slug":"python-string-formatting","status":"publish","type":"post","link":"https:\/\/techkubo.com\/python\/python-string-formatting\/","title":{"rendered":"Python String Formatting"},"content":{"rendered":"\n

String formatting in Python allows you to create strings that include variable values, making your output more dynamic and readable. Python offers several ways to format strings, including the %<\/code> operator, the str.format()<\/code> method, and f-strings (formatted string literals).<\/p>\n\n\n\n

String Formatting Methods<\/strong><\/h2>\n\n\n\n

Python provides multiple ways to format strings, each with its own syntax and use cases:<\/p>\n\n\n\n

    \n
  1. Using the %<\/code> Operator<\/strong><\/li>\n\n\n\n
  2. Using the str.format()<\/code> Method<\/strong><\/li>\n\n\n\n
  3. Using f-strings (Formatted String Literals)<\/strong><\/li>\n<\/ol>\n\n\n\n

    1. Using the %<\/code> Operator<\/strong><\/h2>\n\n\n\n

    The %<\/code> operator is one of the oldest methods of string formatting in Python. It uses format specifiers to insert values into a string.<\/p>\n\n\n\n

    Syntax<\/strong><\/p>\n\n\n\n

    "Hello, %s!" % name<\/pre><\/div>\n\n\n\n
    Example<\/strong><\/p>\n\n\n\n
    name = "Alice"\nage = 30\nprint("My name is %s and I am %d years old." % (name, age))<\/pre><\/div>\n\n\n\n
    <\/p>\n\n\n\n
    2. Using the str.format()<\/code> Method<\/strong><\/h2>\n\n\n\n
    The str.format()<\/code> method provides a more powerful way to format strings. It uses curly braces {}<\/code> as placeholders for the values to be inserted.<\/p>\n\n\n\n
    Syntax<\/strong><\/p>\n\n\n\n
    "Hello, {}!".format(name)<\/pre><\/div>\n\n\n\n
    Example<\/strong><\/p>\n\n\n\n
    name = "Alice"\nage = 30\nprint("My name is {} and I am {} years old.".format(name, age))<\/pre><\/div>\n\n\n\n
    You can also use positional and keyword arguments within the placeholders:<\/p>\n\n\n\n
    print("My name is {0} and I am {1} years old.".format(name, age))\nprint("My name is {name} and I am {age} years old.".format(name="Alice", age=30))<\/pre><\/div>\n\n\n\n
    <\/p>\n\n\n\n
    3. Using f-strings (Formatted String Literals)<\/strong><\/h2>\n\n\n\n
    Introduced in Python 3.6, f-strings provide a concise and readable way to include expressions inside string literals. They are prefixed with f<\/code> or F<\/code> and use curly braces {}<\/code> to evaluate variables and expressions.<\/p>\n\n\n\n
    Syntax<\/strong><\/p>\n\n\n\n
    f"Hello, {name}!"<\/pre><\/div>\n\n\n\n
    Example<\/strong><\/p>\n\n\n\n
    name = "Alice"\nage = 30\nprint(f"My name is {name} and I am {age} years old.")<\/pre><\/div>\n\n\n\n
    You can also include expressions inside the curly braces:<\/p>\n\n\n\n
    print(f"In two years, I will be {age + 2} years old.")<\/pre><\/div>\n\n\n\n
    <\/p>\n\n\n\n
    Python Labs<\/strong><\/h2>\n\n\n\n