code: def create_projdb(tmpdir):
      Path(tmpdir, "proj.db").write_text("DUMMY proj.db")
  
imports: import logging
  import os
  from contextlib import contextmanager
  from pathlib import Path
  from unittest.mock import patch
  import pytest
  import pyproj._datadir
  from pyproj import CRS, Transformer, get_codes, set_use_global_context
  from pyproj._datadir import _pyproj_global_context_initialize
  from pyproj.datadir import DataDirError, append_data_dir, get_data_dir, get_user_data_dir, set_data_dir
  from pyproj.enums import PJType
  from pyproj.exceptions import CRSError
  from test.conftest import proj_env
label_desc: Use image node_id 3 for calling a global function with example usage: create_projdb(tmpdir) without return types