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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 filter_aliases(alias_table):
 """ Filter aliases that does not have a command field in the configuration file. Args: alias_table: The alias table. Yield: A tuple with [0] being the first word of the alias and [1] being the command that the alias points to. """

    for alias in alias_table.sections():
        if alias_table.has_option(alias, 'command'):
            yield (alias.split()[0], remove_pos_arg_placeholders(alias_table.get(alias, 'command')))