Jan 26, 2023 · Since Python 3.8 it is possible to use self-documenting expressions in f-strings like this: is there an equivalent feature in C#? Yes. That outputs: The key here is the $ that precedes the string literal. To do what you want with the name coming dynamically, I'd suggest a more explicit approach of using an extension method. Try this:

The only way to access a variable in C# from a string is with reflection (which is a fairly advanced concept, easy to get wrong, and not very efficient). That being said, you'd do something like: FieldInfo field = thisClass.GetField($"num{i}"); field.SetValue(this, i);

Jan 4, 2022 · For embedded variables likes F strings, it's the $ sign. var x = 22; var y = $"the number is {x}"; next there's the @ symbol for literal strings, this means all special characters are escaped and count as normal characters, and allows for multiline strings by counting the newlines inside the string.

Oct 10, 2017 · If you want to read an f-string from a file and evaluate it according to the syntax of f-strings, you could use eval: Note how we use the f-string first, but convert the tpl into its own repr for immediate eval. Typically, for simple types, eval(repr(val)) should return val.

May 28, 2023 · The fstring function in Python is a way to format strings by embedding expressions inside curly braces {}. It allows for easy and concise string formatting by allowing variables and expressions to be directly inserted into the string.

Sep 15, 2009 · I like Python's way to format strings because you can use it everywhere, it's part of the strings. You can do print("Welcome %s!" % user.name) as you can do Console.Writeln("Welcome {0}!", user.Name) But then in Python you can also do randomMethodThatTakesAString("Welcome %s!"

Jun 19, 2024 · How to use f-strings in Python. To create an f-string, prefix the string with the letter “ f ”. The string itself can be formatted in much the same way that you would with str.format(). F-strings provide a concise and convenient way to embed Python expressions inside string literals for …

Python 3.8 added an = specifier to f-strings. An f-string such as f'{expr=}' will expand to the text of the expression, an equal sign, then the representation of the evaluated expression. Examples:

Nov 15, 2022 · By building on top of the new Python PEG Parser (PEP 617), this PEP proposes to redefine “f-strings”, especially emphasizing the clear separation of the string component and the expression (or replacement, {...}) component. PEP 498 summarizes the syntactical part of “f-strings” as the following:

Jan 23, 2025 · Introduced in Python 3.6, f-strings provide a concise and intuitive way to embed expressions inside string literals. In this blog post, we will explore the fundamental concepts of f-strings, various usage methods, common practices, and best practices to help you become proficient in using them.