def standard_package_names():
for name in standard_paths():<EOL><INDENT>if name.startswith('<STR_LIT:_>') or '<STR_LIT:->' in name:<EOL><INDENT>continue<EOL><DEDENT>if '<STR_LIT:.>' in name and name.rsplit('<STR_LIT:.>')[-<NUM_LIT:1>] not in ['<STR_LIT>', '<STR_LIT>', '<STR_LIT>']:<EOL><INDENT>continue<EOL><DEDENT>yield name.split('<STR_LIT:.>')[<NUM_LIT:0>]<EOL><DEDENT>
Yield standard module names.