code: def open_url(url, wait=False, locate=False):
      import subprocess
  
      def _unquote_file(url):
          try:
              import urllib
          except ImportError:
              import urllib
          if url.startswith("file://"):
              url = urllib.unquote(url[7:])
          return url
  
      if sys.platform == "darwin":
          args = ["open"]
          if wait:
              args.append("-W")
          if locate:
              args.append("-R")
          args.append(_unquote_file(url))
          null = open("/dev/null", "w")
          try:
              return subprocess.Popen(args, stderr=null).wait()
          finally:
              null.close()
      elif WIN:
          if locate:
              url = _unquote_file(url)
              args = 'explorer /select,"{}"'.format(
                  _unquote_file(url.replace('"', ""))
              )
          else:
              args = 'start {} "" "{}"'.format(
                  "/WAIT" if wait else "", url.replace('"', "")
              )
          return os.system(args)
      elif CYGWIN:
          if locate:
              url = _unquote_file(url)
              args = 'cygstart "{}"'.format(
                  os.path.dirname(url).replace('"', "")
              )
          else:
              args = 'cygstart {} "{}"'.format(
                  "-w" if wait else "", url.replace('"', "")
              )
          return os.system(args)
  
      try:
          if locate:
              url = os.path.dirname(_unquote_file(url)) or "."
          else:
              url = _unquote_file(url)
          c = subprocess.Popen(["xdg-open", url])
          if wait:
              return c.wait()
          return 0
      except OSError:
          if (
              url.startswith(("http://", "https://"))
              and not locate
              and not wait
          ):
              import webbrowser
  
              webbrowser.open(url)
              return 0
          return 1
  
imports: import contextlib
  import math
  import os
  import sys
  import time
  from ._compat import _default_text_stdout
  from ._compat import CYGWIN
  from ._compat import get_best_encoding
  from ._compat import int_types
  from ._compat import isatty
  from ._compat import open_stream
  from ._compat import range_type
  from ._compat import strip_ansi
  from ._compat import term_len
  from ._compat import WIN
  from .exceptions import ClickException
  from .utils import echo
label_desc: Use image node_id 6 for calling a global function with example usage: open_url(url, wait, locate) and returns: url, int, subprocess, os, c, int, os, int