We can also use the round() function to fix the numbers of digits after the decimal point. Format a Floating Number to a Fix Width Using round() Function in Python Here the use of %num has allowed us to print the desired value without any function or string formatting. Missing % before num will be a syntax error. Notice that while passing the value of num to the print statement with format specifier %.4f, we are using %num. We will assign a floating number to a variable num and print the value of num with decimal digits up to a fixed width.
#PYTHON STRING FORMAT CODE#
The code might look similar to the printf() function in C programming. We can also set a fixed width for a floating number with the use of %v operator. Format a Floating Number to Fix Width Using the % Operator in Python In python 3.6, we can also use f'' if we want to have the floating digits after the decimal aligned. So, whatever value we have in num will be passed to the empty string before the : and formatted accordingly. In the above program, the argument we have provided is num. The empty string before the colon : is placed so that the argument provided to the format() function takes that place. 5f instead, we’d get up to five digits after the decimal point. 4f is called format specification, which denotes that the output should show only four places after the decimal. We are going to use the format() function to get our result.
Then, we will print the floating number in the format we need. We will create a variable num and assign a floating number to it. Here, we will use the normal formatting process via format specification to fix the width of floating numbers. Format Floating Numbers to a Fixed Width Using Format Specification and the format() Method This article will introduce some methods to format a floating number to a fixed width in Python.
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