Python f-strings with floating point precision

Python f-strings are a convenient way to format strings that contain variable values. Using f-strings, you can easily insert values of variables into a string without having to use concatenation or string formatting functions. In addition, you can control the precision of floating-point numbers when using f-strings.

Basic syntax of f-strings

The basic syntax of f-strings is as follows:

variable = 123
f"Variable value: {variable}"

In this example, the variable variable is inserted into the string using curly braces {}. When this code is executed, the output will be:

Variable value: 123

Controlling the precision of floating-point numbers

In order to control the precision of floating-point numbers when using f-strings, you can use the following syntax:

variable = 3.1415926535
f"Variable value: {variable:.2f}"

In this example, the variable variable is inserted into the string with a precision of 2 decimal places using the :.2f modifier. When this code is executed, the output will be:

Variable value: 3.14

You can change the precision by changing the number after the dot in the modifier. For example, if you want to display 4 decimal places, you can use :.4f.

Conclusion

Python f-strings with floating point precision are a convenient way to format strings with variable values. Using f-strings, you can easily insert values of variables into a string without having to use concatenation or string formatting functions. In addition, you can control the precision of floating-point numbers when using f-strings using the :.Xf modifier, where X is the number of decimal places you want to display.