code: def find_files_and_readers(
      start_time=None,
      end_time=None,
      base_dir=None,
      reader=None,
      sensor=None,
      filter_parameters=None,
      reader_kwargs=None,
      missing_ok=False,
      fs=None,
  ):
      """Find files matching the provided parameters.
  
      Use `start_time` and/or `end_time` to limit found filenames by the times
      in the filenames (not the internal file metadata). Files are matched if
      they fall anywhere within the range specified by these parameters.
  
      Searching is **NOT** recursive.
  
      Files may be either on-disk or on a remote file system.  By default,
      files are searched for locally.  Users can search on remote filesystems by
      passing an instance of an implementation of
      `fsspec.spec.AbstractFileSystem` (strictly speaking, any object of a class
      implementing a ``glob`` method works).
  
      If locating files on a local file system, the returned dictionary
      can be passed directly to the `Scene` object through the `filenames`
      keyword argument.  If it points to a remote file system, it is the
      responsibility of the user to download the files first (directly
      reading from cloud storage is not currently available in Satpy).
  
      The behaviour of time-based filtering depends on whether or not the filename
      contains information about the end time of the data or not:
  
        - if the end time is not present in the filename, the start time of the filename
          is used and has to fall between (inclusive) the requested start and end times
        - otherwise, the timespan of the filename has to overlap the requested timespan
  
      Example usage for querying a s3 filesystem using the s3fs module:
  
      >>> import s3fs, satpy.readers, datetime
      >>> satpy.readers.find_files_and_readers(
      ...     base_dir="s3://noaa-goes16/ABI-L1b-RadF/2019/321/14/",
      ...     fs=s3fs.S3FileSystem(anon=True),
      ...     reader="abi_l1b",
      ...     start_time=datetime.datetime(2019, 11, 17, 14, 40))
      {'abi_l1b': [...]}
  
      Args:
          start_time (datetime): Limit used files by starting time.
          end_time (datetime): Limit used files by ending time.
          base_dir (str): The directory to search for files containing the
                          data to load. Defaults to the current directory.
          reader (str or list): The name of the reader to use for loading the data or a list of names.
          sensor (str or list): Limit used files by provided sensors.
          filter_parameters (dict): Filename pattern metadata to filter on. `start_time` and `end_time` are
                                    automatically added to this dictionary. Shortcut for
                                    `reader_kwargs['filter_parameters']`.
          reader_kwargs (dict): Keyword arguments to pass to specific reader
                                instances to further configure file searching.
          missing_ok (bool): If False (default), raise ValueError if no files
                              are found.  If True, return empty dictionary if no
                              files are found.
          fs (:class:`fsspec.spec.AbstractFileSystem`): Optional, instance of implementation of
              :class:`fsspec.spec.AbstractFileSystem` (strictly speaking, any object of a class implementing
              ``.glob`` is enough).  Defaults to searching the local filesystem.
  
      Returns:
          dict: Dictionary mapping reader name string to list of filenames
  
      """
      reader_files = {}
      reader_kwargs = reader_kwargs or {}
      filter_parameters = filter_parameters or reader_kwargs.get(
          "filter_parameters", {}
      )
      sensor_supported = False
  
      if start_time or end_time:
          filter_parameters["start_time"] = start_time
          filter_parameters["end_time"] = end_time
      reader_kwargs["filter_parameters"] = filter_parameters
  
      for reader_configs in configs_for_reader(reader):
          (
              reader_instance,
              loadables,
              this_sensor_supported,
          ) = _get_loadables_for_reader_config(
              base_dir,
              reader,
              sensor,
              reader_configs,
              reader_kwargs,
              fs,
          )
          sensor_supported = sensor_supported or this_sensor_supported
          if loadables:
              reader_files[reader_instance.name] = list(loadables)
  
      if sensor and not sensor_supported:
          raise ValueError(
              "Sensor '{}' not supported by any readers".format(sensor)
          )
  
      if not (reader_files or missing_ok):
          raise ValueError("No supported files found")
      return reader_files
  
imports: from __future__ import annotations
  import logging
  import os
  import pathlib
  import pickle
  import warnings
  from datetime import datetime, timedelta
  from functools import total_ordering
  import yaml
  from yaml import UnsafeLoader
  from satpy._config import config_search_paths, get_entry_points_config_dirs, glob_config
  from .yaml_reader import AbstractYAMLReader
  from .yaml_reader import load_yaml_configs
label_desc: Use image node_id 12 for calling a global function with example usage: find_files_and_readers(start_time, end_time, base_dir, reader, sensor, filter_parameters, reader_kwargs, missing_ok, fs) and returns: reader_files