How do I print the entire decimal output (not in scientific notation)?

Asked Feb 10 '19 at 04:27

Active Feb 10 '19 at 04:27

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I am dividing a 100 digit number with a 1-2 digit number. The result I end up with is:

4.483392416946529e+99

How do I print all 99 digits of this number?

Wrapping the division with float() doesn't work at all.

Here is the code I used

from random import *

a = ''
for n in range(101):
    x = randint(0,9)
    a = a + str(x)

a = int(a)
a/7

I expected a 99 digit number rounded to two decimal places.

asked Feb 10 '19 at 04:27

zerosofthezeta

With float division, you can't. Float arithmetic does not have enough precision. – Olivier Melançon Feb 10 '19 at 04:34
Taking into account how floating point numbers are stored in a computer you should not expect the 99th digit to be accurate. – Klaus D. Feb 10 '19 at 04:34
@OlivierMelançon That seems so strange. Do you know of any libraries that have enough precision? – zerosofthezeta Feb 10 '19 at 04:35
@zerosofthezeta Yes, the [fraction module](https://docs.python.org/3/library/fractions.html) exists for that – Olivier Melançon Feb 10 '19 at 04:37
1

Or the decimal module – Dillon Davis Feb 10 '19 at 04:39
In that case, since we are dividing integers, the fraction module really is more appropritate. Otherwise, the decimal would be more appropriate – Olivier Melançon Feb 10 '19 at 04:40
@DillonDavis Thanks! Decimal(a)/Decimal(7) with precision 102 did the trick! – zerosofthezeta Feb 10 '19 at 04:58

0 Answers0