What is a standard approach to deal with float precision in python?

Question

for example at the Paint costs challenge from codecoach, I did a workaround that worked. It's not efficient nor best programming practice.
Moreover I did that only because the tests don't pass with 2 as input.

At this post I found some useful information about it
https://realpython.com/JUMP_LINK__&&__python__&&__JUMP_LINK-rounding/

I found this an interesting theme to raise. Sorry if it was a repetitive and or bad formulated question, I'm just a beginner.

Sample code:

from math import ceil

nr_color = 2
# nr_color = int(input())

price_per_color = 5
price_fix = 40
tax = 0.1

price = price_per_color * nr_color + price_fix
print(price) # 50
price = price * (1+tax)
print(price) # float precision issue
# 55.00000000000001

# without workaround
price1 = ceil(price)
print('without workaround: ', price1) # 56

# workaround
price2 = round(price, 3)
price2 = ceil(price2)
print('with workaround: ', price2) # 55

Answer 1

That's not really an issue and you solved it exact the same way as I've seen it trillion times, because it is not a workaround but the correct way to deal with float. Therefore many languages provide "higher" datatypes, like e.g. the "BigDecimal" in Java. Not sure, if there's an equivalent type in python.