1  from abc import abstractmethod
   2  from typing import Optional, Pattern, Text, Tuple, TypeVar, Union
   3  
   4  _T = TypeVar("_T", bound=Version)
   5  
   6  class Version:
   7      def __repr__(self) -> str: ...
   8      @abstractmethod
   9      def __init__(self, vstring: Optional[Text] = ...) -> None: ...
  10      @abstractmethod
  11      def parse(self: _T, vstring: Text) -> _T: ...
  12      @abstractmethod
  13      def __str__(self) -> str: ...
  14      @abstractmethod
  15      def __cmp__(self: _T, other: Union[_T, str]) -> bool: ...
  16  
  17  class StrictVersion(Version):
  18      version_re: Pattern[str]
  19      version: Tuple[int, int, int]
  20      prerelease: Optional[Tuple[Text, int]]
  21      def __init__(self, vstring: Optional[Text] = ...) -> None: ...
  22      def parse(self: _T, vstring: Text) -> _T: ...
  23      def __str__(self) -> str: ...
  24      def __cmp__(self: _T, other: Union[_T, str]) -> bool: ...
  25  
  26  class LooseVersion(Version):
  27      component_re: Pattern[str]
  28      vstring: Text
  29      version: Tuple[Union[Text, int], ...]
  30      def __init__(self, vstring: Optional[Text] = ...) -> None: ...
  31      def parse(self: _T, vstring: Text) -> _T: ...
  32      def __str__(self) -> str: ...
  33      def __cmp__(self: _T, other: Union[_T, str]) -> bool: ...
  34