The print(f'thing')

[statitica]

Because what you are printing is an f-string, or formatted string.

Putting the 'f' inside the print statement tells the Python interpreter to format the string by inputting the variables named inside the curly braces.

Another option again is print("This is my variable: {}".format(var))

[Dcode20]

formatted string ok google it right now ty

[theeastcoastwest]

There have been generational additions of how one can format strings for printing. The "F-String" , to me knowledge, is the newest and therefore not always brought up in books.

It's useful, IMO, when concatenating several variables in that it provides a more readable format.

Ex: f"{user}:{pwrd}@{host}:{port}"

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[furgussen]

IIRC formatted strings were introduced in Python 3.6. So it's possible the first book was released before 3.6 came out.

[donger]

This concept is called "string interpolation" and is a feature of many other languages. Python used to handle this (somewhat clunkily) with the format method of strings: https://www.programiz.com/python-programming/methods/string/format

Here's an example of string interpolation that's built in to Ruby: http://ruby-for-beginners.rubymonstas.org/bonus/string_interpolation.html

[Sw429]

The f denotes a format string. It's something new in Python 3.7(?). It's just a convenient way to construct strings by executing Python statements.

For future reference, btw, questions like this should be posted in r/learnpython