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# aseeon/euler.number.py Created Sep 4, 2014

Find e to the Nth Digit. Enter a number and have the program generate e up to that many decimal places. Keep a limit to how far the program will go
 """"Find e to the Nth Digit Enter a number and have the program generate e up to that many decimal places. Keep a limit to how far the program will go""" from math import e def e_with_precision(n): """Return euler's number to the n-th decimal place :param n: number of decimal places to return :type n: int :return: euler's number with n decimal places :rtype: str """ return '%.*f' % (n, e) if __name__ == '__main__': # there is no do while loop in python, so we need to improvise correct_input = False while not correct_input: # ask until you get correct input print('Precision must be between 1 and 51') precision = int(raw_input('Number of decimal places: ')) if 51 >= precision > 0: correct_input = True print(e_with_precision(precision))

### daniel-chae commented Jul 3, 2015

 return '%.*f' % (n, e) I was looking at your problem solving and I couldn't understand what the above sentence does. Could you explain it for me ??

### srm01 commented Aug 17, 2015

 return '%.*f' % (n,e) , returns the string type of nth value of e ,toned down to precision n. When the precision is not known, until before runtime, this syntax works fine in that case.

### mbomb007 commented Oct 25, 2016

 The output is incorrect for `n > 15` . https://www.math.utah.edu/~pa/math/e.html. .....Your output for `n=50` with spaces added: `2.71828 18284 59045 09079 55982 98427 64884 23347 47314 45312` Correct output for `n=50` with spaces added: `2.71828 18284 59045 23536 02874 71352 66249 77572 47093 69995`

### elidot commented Apr 24, 2018

 return '%.*f' % (n,e). hi, I tried to use the new formatting for this but I could not get it right, i'm new to this, so I was wondering if there is way to use the new formatting in python 3 instead of %. thank you in advance

### Athul8raj commented May 16, 2018

 You can put placeholders "{ :*f}."format(n,e) in python 3 or using f string formatting in python 3.6...both works fine

### patyyyo commented Aug 14, 2019

 Athul8raj I've tried using the placeholders in your comment but there not working.
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