code: def main():
      import textwrap
  
      usage = textwrap.dedent(
          """\
      pickleshare - manage PickleShare databases
  
      Usage:
  
          pickleshare dump /path/to/db > dump.txt
          pickleshare load /path/to/db < dump.txt
          pickleshare test /path/to/db
      """
      )
      DB = PickleShareDB
      import sys
  
      if len(sys.argv) < 2:
          print(usage)
          return
  
      cmd = sys.argv[1]
      args = sys.argv[2:]
      if cmd == "dump":
          if not args:
              args = ["."]
          db = DB(args[0])
          import pprint
  
          pprint.pprint(db.items())
      elif cmd == "load":
          cont = sys.stdin.read()
          db = DB(args[0])
          data = eval(cont)
          db.clear()
          for k, v in db.items():
              db[k] = v
      elif cmd == "testwait":
          db = DB(args[0])
          db.clear()
          print(db.waitget("250"))
      elif cmd == "test":
          test()
          stress()
  
imports: from __future__ import print_function
  import os, stat, time
  import errno
  import sys
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types