Modules
		argparse enum functools hash_calc smart_hasher

Classes
		enum.IntEnum(builtins.int, enum.Enum) ExitCode   class ExitCode(enum.IntEnum)     ExitCode(value, names=None, *, module=None, qualname=None, type=None, start=1)   Code with values less than 7 are considered like OK, and program can continue execution Ref: https://docs.python.org/3.7/library/enum.html Ref: https://stackoverflow.com/questions/6060635/convert-enum-to-int-in-python     Method resolution order: ExitCode enum.IntEnum builtins.int enum.Enum builtins.object Data and other attributes defined here: APP_USAGE_ERROR = <ExitCode.APP_USAGE_ERROR: 12> DATA_READ_ERROR = <ExitCode.DATA_READ_ERROR: 9> EXCEPTION_THROWN_ON_PROGRAM_EXECUTION = <ExitCode.EXCEPTION_THROWN_ON_PROGRAM_EXECUTION: 10> FAILED = <ExitCode.FAILED: 7> INVALID_COMMAND_LINE_PARAMETERS = <ExitCode.INVALID_COMMAND_LINE_PARAMETERS: 11> OK = <ExitCode.OK: 0> OK_SKIPPED_ALREADY_CALCULATED = <ExitCode.OK_SKIPPED_ALREADY_CALCULATED: 2> PROGRAM_INTERRUPTED_BY_USER = <ExitCode.PROGRAM_INTERRUPTED_BY_USER: 8> Data descriptors inherited from enum.Enum: name The name of the Enum member. value The value of the Enum member. Data descriptors inherited from enum.EnumMeta: __members__ Returns a mapping of member name->value.   This mapping lists all enum members, including aliases. Note that this is a read-only view of the internal mapping.

Functions
		parse_cmd_line() Ref: "Argparse Tutorial" https://docs.python.org/3/howto/argparse.html Ref: "15.4.3. The add_argument() method" https://docs.python.org/2/library/argparse.html#the-add-argument-method

Data
		exit_code_descriptions = {<ExitCode.OK: 0>: 'everthing fine. Program executed successfully', <ExitCode.OK_SKIPPED_ALREADY_CALCULATED: 2>: 'everything fine. OK may be returned anyway\n ...s skipped because the hash is already calculated.', <ExitCode.FAILED: 7>: 'general failure, more specific information is not available.', <ExitCode.DATA_READ_ERROR: 9>: 'there was error(s) when reading some file(s). Probably hash is not calculated for all files', <ExitCode.APP_USAGE_ERROR: 12>: 'incorrect usage of the application'}