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Jun 19, 2024 · f-strings (formatted string literals) are a way to embed expressions inside string literals in Python, using curly braces {}. They provide an easy and readable way to format strings dynamically. name = "Alice"
There are various string formatting methods: Python <2.6: "Hello %s" % name; Python 2.6+: "Hello {}".format(name) (uses str.format) Python 3.6+: f"{name}" (uses f-strings) Which is better, and for what situations?
Python's f-string provides a readable way to interpolate and format strings. They're readable, concise, and less prone to error than traditional string interpolation and formatting tools, such as the .format() method and the modulo operator (%).
F-String was introduced in Python 3.6, and is now the preferred way of formatting strings. Before Python 3.6 we had to use the format() method. F-Strings. F-string allows you to format selected parts of a string. To specify a string as an f-string, simply put an f in front of the string literal, like this: Example Get your own Python Server.
- How to Format String using % Operator. It is the oldest method of string formatting. Here we use the modulo % operator. The modulo % is also known as the “string-formatting operator”.
- How to Format String using format() Method. Format() method was introduced with Python3 for handling complex string formatting more efficiently. Formatters work by putting in one or more replacement fields and placeholders defined by a pair of curly braces { } into a string and calling the str.format().
- Understanding Python f-string. PEP 498 introduced a new string formatting mechanism known as Literal String Interpolation or more commonly as F-strings (because of the leading f character preceding the string literal).
- Python String Template Class. In the String module, Template Class allows us to create simplified syntax for output specification. The format uses placeholder names formed by $ with valid Python identifiers (alphanumeric characters and underscores).
Python has a string formatting tool called f-strings, which stands for formatted string literals. F-strings are string literals that you can create by prepending an f or F to the literal. They allow you to do string interpolation and formatting by inserting variables or expressions directly into the literal.
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In this tutorial, you'll learn about the main tools for string formatting in Python, as well as their strengths and weaknesses. These tools include f-strings, the .format() method, and the modulo operator.
