Is it possible to discard k decimal places in float in Python?

Question

Python

Hello, next question.
Let's say there is a number 17.212123445 ...
And you need to write to memory only the first digit after the decimal point. How to do this using real and integer operations?

Answer 1

it??

>>> a=13.946
  >>> print(a)
  13.946
  >>> print("%.2f" % a)
  13.95

Answer 2

>>> float("{0:.1f}".format(17.212123445))
17.2

Answer 3

>>> n = 17.212123445
>>> n = int(n * 100) / 100
>>> n
17.21
>>>

Answer 4

There is also a fractions module. It allows you to "correctly" perform floating point calculations. If you just want to save, then the answer is correct.
If you don't understand what I'm talking about, just run this code:'{:.30}'.format(17.33333333)

Answer 5

https://pythonworld.ru/osnovy/okruglenie.html
Maybe not quite right, but in my case, I was looking for exactly this