Fixed digits after decimal with f-strings

Question

Is there an easy way with Python f-strings to fix the number of digits after the decimal point   Specifically f-strings  not other string formatting options like  format or     For example  let s say I want to display 2 digits after the decimal place    How do I do that  Let s say that  a   10 1234

User · Accepted Answer

Include the type specifier in your format expression    gt  gt  gt  a   10 1234  gt  gt  gt  f  a  2f    10 12

User · Answer

When it comes to float numbers  you can use format specifiers   f  value  width   precision      where    value is any expression that evaluates to a number width specifies the number of characters used in total to display  but if value needs more space than the width specifies then the additional space is used   precision indicates the number of characters used after the decimal point   What you are missing is the type specifier for your decimal value  In this link  you an find the available presentation types for floating point and decimal   Here you have some examples  using the f  Fixed point  presentation type     notice that it adds spaces to reach the number of characters specified by width In  1   f  1   3   1 5 10 3f   Out 1         5 500     notice that it uses more characters than the ones specified in width In  2   f  3000   3     1   2  2 1f    Out 2    3001 7   In  3   f  1 2345   4     1   2  9 6f   Out 3     3 234500     omitting width but providing precision will use the required characters to display the number with the the specified decimal places In  4   f  1 2345   3   2  3f    Out 4    7 234     not specifying the format will display the number with as many digits as Python calculates In  5   f  1 2345   3   0 5   Out 5    2 7344999999999997

User · Answer

Adding to Rob s answer  you can use format specifiers with f strings  more here    You can control the number of decimals   pi   3 141592653589793238462643383279  print f The first 6 decimals of pi are  pi  6f      The first 6 decimals of pi are 3 141593    You can convert to percentage   grade   29 45  print f My grade rounded to 3 decimals is  grade  3       My grade rounded to 3 decimals is 64 444     You can do other things like print constant length   from random import randint for i in range 5       print f My money is  randint 0  150   gt 3      My money is 126  My money is   7  My money is 136  My money is  15  My money is  88    Or even print with a comma thousand separator   print f I am worth  10000000000        I am worth 10 000 000 000

User · Answer

a   10 1234  print f  a 0 2f      in 0 2f    0 is telling python to put no limit on the total number of digits to display  2 is saying that we want to take only 2 digits after decimal  the result will be same as a round   function  f is telling that it s a float number  If you forget f then it will just print 1 less digit after the decimal  In this case  it will be only 1 digit after the decimal    A detailed video on f-string for numbers https   youtu be RtKUsUTY6to t 606

User · Answer

Adding to Rob  s answer  in case you want to print rather large numbers  using thousand separators can be a great help  note the comma     gt  gt  gt  f  a 1000   2f    10 123 40

[python] Fixed digits after decimal with f-strings

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