Hi, Documentation misses 'help' action for optparse, which is used in `pip` and I suppose in other projects: https://github.com/pypa/pip/blob/develop/pip/cmdoptions.py#L65 It will be more convenient for reference if instead of textual description, the docs contained this table: https://hg.python.org/cpython/file/2.7/Lib/optparse.py#l481 # The set of actions allowed by option parsers. Explicitly listed # here so the constructor can validate its arguments. ACTIONS = ("store", "store_const", "store_true", "store_false", "append", "append_const", "count", "callback", "help", "version") -- anatoly t.