def validate_collection(self, name_or_collection,
                            scandata=False, full=False, session=None):
        """Validate a collection.

        Returns a dict of validation info. Raises CollectionInvalid if
        validation fails.

        :Parameters:
          - `name_or_collection`: A Collection object or the name of a
            collection to validate.
          - `scandata`: Do extra checks beyond checking the overall
            structure of the collection.
          - `full`: Have the server do a more thorough scan of the
            collection. Use with `scandata` for a thorough scan
            of the structure of the collection and the individual
            documents.
          - `session` (optional): a
            :class:`~pymongo.client_session.ClientSession`.

        .. versionchanged:: 3.6
           Added ``session`` parameter.
        """
        name = name_or_collection
        if isinstance(name, Collection):
            name = name.name

        if not isinstance(name, string_type):
            raise TypeError("name_or_collection must be an instance of "
                            "%s or Collection" % (string_type.__name__,))

        result = self.command("validate", _unicode(name),
                              scandata=scandata, full=full, session=session)

        valid = True
        # Pre 1.9 results
        if "result" in result:
            info = result["result"]
            if info.find("exception") != -1 or info.find("corrupt") != -1:
                raise CollectionInvalid("%s invalid: %s" % (name, info))
        # Sharded results
        elif "raw" in result:
            for _, res in iteritems(result["raw"]):
                if "result" in res:
                    info = res["result"]
                    if (info.find("exception") != -1 or
                            info.find("corrupt") != -1):
                        raise CollectionInvalid("%s invalid: "
                                                "%s" % (name, info))
                elif not res.get("valid", False):
                    valid = False
                    break
        # Post 1.9 non-sharded results.
        elif not result.get("valid", False):
            valid = False

        if not valid:
            raise CollectionInvalid("%s invalid: %r" % (name, result))

        return result
Validate a collection.

        Returns a dict of validation info. Raises CollectionInvalid if
        validation fails.

        :Parameters:
          - `name_or_collection`: A Collection object or the name of a
            collection to validate.
          - `scandata`: Do extra checks beyond checking the overall
            structure of the collection.
          - `full`: Have the server do a more thorough scan of the
            collection. Use with `scandata` for a thorough scan
            of the structure of the collection and the individual
            documents.
          - `session` (optional): a
            :class:`~pymongo.client_session.ClientSession`.

        .. versionchanged:: 3.6
           Added ``session`` parameter.
        
stackoverflow/venv/lib/python3.6/site-packages/pymongo/database.py