float("{:.2f}" return long number?

[korenron]

Hello ,
I have a code that divide 2 numbers then give me 2 after the decimal point
in most cased it's working
but something I get this answer :

0.06999999999999999
0.11000000000000001

in most cases I get the correct form:

0.03
0.05
0.01
0.0

what could be the resaon ?
*** I will try to catch the 2 numbers that I'm dividing when this happand

Thanks ,

[snippsat]

what could be the resaon ?

Floating Point Arithmetic: Issues and Limitations
Basic Answers
It most cases it dos not matter,use f-string to control the amount of digit wanted.

>>> n = 0.06999999999999999
>>> print(f'The number is: {n:.2f}')
The number is: 0.07
>>> print(f'The number is: {n:.3f}')
The number is: 0.070

For eg financial calculation it can matter then use Decimale module

pennies = input('Enter pennies: ')
dollars = Decimal(pennies) * Decimal('.01')
print(f'{pennies} pennies is ${dollars} in dollars')

Output:
Enter pennies: 35
35 pennies is $0.35 in dollars

[korenron]

OK
Thank you,