Finding the amount of digits after the decimal point

Question

Im trying to make a function that returns the amount of digits pass the decimal point I dont know what to do.

So for example

5.67 returns 2 digits
5.159 returns 3 digits
5.000 returns 0 digits

I have tried to use the round() function but that doesnt work

Any suggestions?

My code so far enter image description here

You can only do this using string functions, not numeric functions. — Barmar, Mar 15 '21 at 23:36
Does this answer your question? [Easy way of finding decimal places](https://stackoverflow.com/questions/6189956/easy-way-of-finding-decimal-places) — SuperStormer, Mar 15 '21 at 23:37

Tkinter Lover · Answer 1 · 2021-03-15T23:55:14.847

0

how is this? Please let me know :)

def get_num_digits_after_point(num):
    newNum = str(num)

    should_I_count = False
    count = 0
    for char in newNum:
        if char == '.':
            should_I_count = True
        elif should_I_count:
            count += 1

    q = False
    NEWcount = 0
    d = 0
    for i in newNum:
        if i == '.':
            q = True
        elif q:
            d += 1
            if i == '0':
                NEWcount += 1
    # print(NEWcount)
    # print(d)
    if NEWcount == d:
        return 0
    else:
        return count


print(get_num_digits_after_point(5.67))
print(get_num_digits_after_point(5.159))
print(get_num_digits_after_point(5.001))
print(get_num_digits_after_point(5.000))

edited Mar 15 '21 at 23:55

answered Mar 15 '21 at 23:40

Tkinter Lover

835
3
19

`get_num_digits_after_point(5.001)` returns 1. Shouldn't answer be 3? – DarrylG Mar 15 '21 at 23:43
Can u explain this real quickly? – John Williams Mar 15 '21 at 23:45
DarryIG, it should return 3 – John Williams Mar 15 '21 at 23:50
Thanks! I fixed it :) – Tkinter Lover Mar 15 '21 at 23:55
Btw, i need to make seperate function for when the number has 1 digit, 2 digit, 3 digit or 0 digit pass the decimal points – John Williams Mar 15 '21 at 23:56
what the For Char in the function mean? – John Williams Mar 15 '21 at 23:59
It goes though every character in the string – Tkinter Lover Mar 16 '21 at 00:00
ok real quick if u can, can you explain it in words, the function – John Williams Mar 16 '21 at 00:01
@JohnWilliams--are you sayingyou need separate functions--one for 0 digits, one for 1 digits, one for 2 digit, etc.? – DarrylG Mar 16 '21 at 00:02
@helloworld14751 Yes – John Williams Mar 16 '21 at 00:03
? Anyone has anything? – John Williams Mar 16 '21 at 02:46
I just need how to check if 1 digit is pass the decimcal points? – John Williams Mar 16 '21 at 21:59

Finding the amount of digits after the decimal point

1 Answers1