As I thought after reading the kata's description, there are only two types of numbers in given string:

• the integer number, i.e. 0, 13456, -25214, etc.
• the ratio A/B or -A/B, where A and B are non-negative integer numbers and B != 0.
  Thus, numbers like 1.7976931348623157E308, 4.9E-324, 0.4445839983169688 are absent in given strings guaranteed.

Howeher, there are tests with exactly these numbers!
Please, explain.

Published a python translation