How to pad a string with leading zeros in Python 3

Question

I m trying to make length   001 in Python 3 but whenever I try to print it out it truncates the value without the leading zeros  length   1   How would I stop this happening without having to cast length to a string before printing it out

User · Answer

Python integers don t have an inherent length or number of significant digits  If you want them to print a specific way  you need to convert them to a string  There are several ways you can do so that let you specify things like padding characters and minimum lengths   To pad with zeros to a minimum of three characters  try   length   1 print format length   03

User · Answer

I suggest this ugly method but it works   length   1 lenghtafterpadding   3 newlength    0     lenghtafterpadding - len str length      str length    I came here to find a lighter solution than this one

User · Answer

Since python 3 6 you can use fstring     gt  gt  gt  length   1  gt  gt  gt  print f length    length 03    length   001

User · Answer

There are many ways to achieve this but the easiest way in Python 3 6   in my opinion  is this   print f  1 03

User · Answer

Make use of the zfill   helper method to left-pad any string  integer or float with zeros  it s valid for both Python 2 x and Python 3 x   Sample usage   print str 1  zfill 3     Expected output  001   Description   When applied to a value  zfill   returns a value left-padded with zeros when the length of the initial string value less than that of the applied width value  otherwise  the initial string value as is   Syntax   str string  zfill width    Where string represents a string  an integer or a float  and   width  the desired length to left-pad

[python] How to pad a string with leading zeros in Python 3

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