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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find_steam_location():
 """ Finds the location of the current Steam installation on Windows machines. Returns None for any non-Windows machines, or for Windows machines where Steam is not installed. """

  if registry is None:
    return None

  key = registry.CreateKey(registry.HKEY_CURRENT_USER,"Software\Valve\Steam")
  return registry.QueryValueEx(key,"SteamPath")[0]