code: def _parse_prefix(path):
      path_prefix = ""
      if isinstance(path, str):
          parsed_path = urlparse(path)
          if parsed_path.scheme:
              path_prefix = (
                  f"{parsed_path.scheme}://{parsed_path.netloc}"
              )
      return path_prefix
  
imports: import os
  from typing import Dict
  from urllib.parse import urlparse
  import numpy
  import pandas
  from ...None import opcodes
  from ...config import options
  from ...lib.filesystem import file_size, get_fs, glob, open_file, FileSystem
  from ...serialization.serializables import AnyField, BoolField, DictField, ListField, StringField, Int32Field, Int64Field
  from ...utils import is_object_dtype, lazy_import
  from ..arrays import ArrowStringDtype
  from ..operands import OutputType
  from ..utils import parse_index, to_arrow_dtypes, contain_arrow_dtype
  from .core import IncrementalIndexDatasource, ColumnPruneSupportedDataSourceMixin, IncrementalIndexDataSourceMixin, merge_small_files
label_desc: Use image node_id 3 for calling a global function with example usage: _parse_prefix(path) and returns: path_prefix