class_docstr: This class abstracts handling of a set of version specifiers.
  
  It can be passed a single specifier (``>=3.0``), a comma-separated list of
  specifiers (``>=3.0,!=3.1``), or no specifier at all.
docstr: Returns the number of specifiers in this specifier set.
docstr_tok: ["Returns","the","number","of","specifiers","in","this","specifier","set","."]
code: def __len__(self) -> int:
      """Returns the number of specifiers in this specifier set."""
      return len(self._specs)
  
imports: import abc
  import itertools
  import re
  from typing import Callable, Iterable, Iterator, List, Optional, Tuple, TypeVar, Union
  from .utils import canonicalize_version
  from .version import Version
label_desc: Use image node_id 9 for calling the SpecifierSet obj's underlying member method code with example usage: obj.__len__() and returns: len