Here is a list of all documented namespace members with links to the namespaces they belong to:

• BadFormatConversionError : CommandLine
• BadFormatTokenError : CommandLine
• BadVerbSelectedError : CommandLine
• ErrorType : CommandLine
• HelpRequestedError : CommandLine
• HelpVerbRequestedError : CommandLine
• MissingRequiredOptionError : CommandLine
• MissingValueOptionError : CommandLine
• MutuallyExclusiveSetError : CommandLine
• NoVerbSelectedError : CommandLine
• SequenceOutOfRangeError : CommandLine
• UnknownOptionError : CommandLine