def available_output_formats():
output_formats = []<EOL>for v in pkg_resources.iter_entry_points(DRIVERS_ENTRY_POINT):<EOL><INDENT>driver_ = v.load()<EOL>if hasattr(driver_, "<STR_LIT>") and (<EOL>driver_.METADATA["<STR_LIT>"] in ["<STR_LIT:w>", "<STR_LIT>"]<EOL>):<EOL><INDENT>output_formats.append(driver_.METADATA["<STR_LIT>"])<EOL><DEDENT><DEDENT>return output_formats<EOL>
Return all available output formats.

Returns
-------
formats : list
    all available output formats