code: def is_binary(system_binary_str):
      '''Assert that a string represents a system binary
  
      Return true if a string represents a system binary
      Raise TypeError if the system_binary_str is not a string
      Raise ValueError if the system_binary_str is not a system binary
  
      :param system_binary_str: STR string representing a system binary
      '''
      if not isinstance(system_binary_str, str):
          raise TypeError("{} must be of type STR".format(system_binary_str))
      binary_str = shutil.which(system_binary_str)
      if not binary_str:
          msg = "{} is not valid system binary".format(system_binary_str)
          raise ValueError(msg)
      return Truf is_binary(system_binary_str):
      '''Assert that a string represents a system binary
  
      Return true if a string represents a system binary
      Raise TypeError if the system_binary_str is not a string
      Raise ValueError if the system_binary_str is not a system binary
  
      :param system_binary_str: STR string representing a system binary
      '''
      if not isinstance(system_binary_str, str):
          raise TypeError("{} must be of type STR".format(system_binary_str))
      binary_str = shutil.which(system_binary_str)
      if not binary_str:
          msg = "{} is not valid system binary".format(system_binary_str)
          raise ValueError(msg)
      return True
docs: Assert that a string represents a system binary
  
      Return true if a string represents a system binary
      Raise TypeError if the system_binary_str is not a string
      Raise ValueError if the system_binary_str is not a system binary
  
      :param system_binary_str: STR string representing a system binary