code: def total_physical_memory():
      '''
      Return the total number of bytes of physical memory.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' ps.total_physical_memory
      '''
      if psutil.version_info < (0, 6, 0):
          msg = 'virtual_memory is only available in psutil 0.6.0 or greater'
          raise CommandExecutionError(msg)
      try:
          return psutil.virtual_memory().total
      except AttributeError:
          # TOTAL_PHYMEM is deprecated but with older psutil versions this is
          # needed as a fallback.
          return psutil.TOTAL_PHYMEf total_physical_memory():
      '''
      Return the total number of bytes of physical memory.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' ps.total_physical_memory
      '''
      if psutil.version_info < (0, 6, 0):
          msg = 'virtual_memory is only available in psutil 0.6.0 or greater'
          raise CommandExecutionError(msg)
      try:
          return psutil.virtual_memory().total
      except AttributeError:
          # TOTAL_PHYMEM is deprecated but with older psutil versions this is
          # needed as a fallback.
          return psutil.TOTAL_PHYMEM
docs: Return the total number of bytes of physical memory.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' ps.total_physical_memory