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I need to format the number of decimal places that a variable displays in an f-string using a variable for the number of places.
n = 5
value = 0.345
print(f'{value:.4f}')
Instead of value.4f, I need value.nf where n is the number of decimal places to which the variable should be rounded.
526
When using f-Strings to display variables, you only need to specify the names of the variables inside a set of curly braces {} . And at runtime, all variable names will be replaced with their respective values.
String strDouble = String. format("%. 2f", 1.23456); This will format the floating point number 1.23456 up-to 2 decimal places, because we have used two after decimal point in formatting instruction %.
In the above example, we create the variables to be formatted into the string. Then, in the simples form, we can use {} as placeholders for the variables to be used. We then apply the . format() method to the string and specify the variables as an ordered set of parameters.
%s acts a placeholder for a string while %d acts as a placeholder for a number. Their associated values are passed in via a tuple using the % operator.
This should work:
n = 5
value = 0.345
print(f'{value:.{n}f}')
Output:
0.34500
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