windows percision lost

[heyhpython]

• Did you find a bug in datatable, or maybe the bug found you?
  Tell us what it is.

• How to reproduce the bug?
  This part is the most important. Please provide a code snippet which, when
  executed in console, demonstrates the problem. If necessary, attach any data
  files to the issue.
  

• What was the expected behavior?
  In case it is not obvious, please tell us what result should your code
  produce.
  '0.35' convert to float64 should be 0.35

• Your environment?
  What is your datatable version, python version, and operating system?
  win11 x64
  python 3.7.16

• Tag the issue with [bug] or [segfault] (depending on whether it crashes
  Python or not).

• Thank you for contributing, and sorry for the inconvenience.