Function that checks if a float is 3 digit

Question

Create a function that checks if a number is a three digit number.

For example:

5.67 will be considered a three digit number 3.01 will be considered a three digit number 3.00 will not be cosidered a three digit number 0.123 will be cosidered a three digit number Call your function: three_digit()

I have already done some workenter image description here

Please post your code here rather than images or screenshots — shree.pat18, Mar 17 '21 at 03:19
You're cheating. The code you posted checks to see if the number is odd. Your spec is strange, but you can give it a shot. — Tim Roberts, Mar 17 '21 at 03:21
And what about 58,900.0? Is that three digits? What about 0.000876? — Tim Roberts, Mar 17 '21 at 03:21
You are going to run into some floating point representation issues. Some decimal values are not possible to represent exactly in floats. So they will show up such as 2.30000000000012. That will affect how you measure 3 digits. — user1558604, Mar 17 '21 at 03:23
You said you had done some work, but you had done no work at all. You copied an "is this number odd" function and changed the function name. — Tim Roberts, Mar 17 '21 at 03:25
You still haven't completely specified the problem, how can we know if there's a simpler solution? — Mark Ransom, Mar 17 '21 at 03:30

Innaz · Answer 1 · 2021-03-17T03:27:37.393

0

this is works:

def three_digit(num):
    if len(str(num).replace(".","").lstrip('0'))==3:
        return "YES"
    else:
        return "NO"
        
print(three_digit(1.234))

edited Mar 17 '21 at 03:27

answered Mar 17 '21 at 03:23

Innaz

11
3

1

Close, but your code fails for 0.123. You can just .strip('0'). That was going to be my answer. – Tim Roberts Mar 17 '21 at 03:24
You asked for us to do your homework without making any effort on your own. That's cheating. – Tim Roberts Mar 17 '21 at 03:28
`lstrip` isn't sufficient because it still considers trailing zeros. – Mark Ransom Mar 17 '21 at 03:29
@Mark Ransom I think lstrip also removes trailing characters (from the left). – TechySharnav Mar 17 '21 at 03:40
@TechySharnav trailing characters are on the right by definition, not the left. – Mark Ransom Mar 17 '21 at 03:50
@Mark Ransom Okay. But by converting the float to str, it removes the trailing zeros on the right. Like `str(5.670000000)` returns `'5.67'` – TechySharnav Mar 17 '21 at 03:57
@TechySharnav see [Is floating point math broken?](https://stackoverflow.com/q/588004/5987). And consider the example that Tim Roberts gave of 58900. – Mark Ransom Mar 17 '21 at 04:10

Function that checks if a float is 3 digit

1 Answers1