(self, attrs=None)
Construct a new Distribution instance: initialize all the
        attributes of a Distribution, and then use 'attrs' (a dictionary
        mapping attribute names to values) to assign some of those
        attributes their "real" values.  (Any attributes not mentioned in
        'attrs' will be assigned to some null value: 0, None, an empty list
        or dictionary, etc.)  Most importantly, initialize the
        'command_obj' attribute to the empty dictionary; this will be
        filled in with real command objects by 'parse_command_line()'.
Construct a new Distribution instance: initialize all the
        attributes of a Distribution, and then use 'attrs' (a dictionary
        mapping attribute names to values) to assign some of those
        attributes their "real" values.  (Any attributes not mentioned in
        'attrs' will be assigned to some null value: 0, None, an empty list
        or dictionary, etc.)  Most importantly, initialize the
        'command_obj' attribute to the empty dictionary; this will be
        filled in with real command objects by 'parse_command_line()'.
Construct a new Distribution instance : initialize all the attributes of a Distribution and then use attrs ( a dictionary mapping attribute names to values ) to assign some of those attributes their real values . ( Any attributes not mentioned in attrs will be assigned to some null value : 0 None an empty list or dictionary etc . ) Most importantly initialize the command_obj attribute to the empty dictionary ; this will be filled in with real command objects by parse_command_line () .
def __init__(self, attrs=None):
        """Construct a new Distribution instance: initialize all the
        attributes of a Distribution, and then use 'attrs' (a dictionary
        mapping attribute names to values) to assign some of those
        attributes their "real" values.  (Any attributes not mentioned in
        'attrs' will be assigned to some null value: 0, None, an empty list
        or dictionary, etc.)  Most importantly, initialize the
        'command_obj' attribute to the empty dictionary; this will be
        filled in with real command objects by 'parse_command_line()'.
        """

        # Default values for our command-line options
        self.verbose = 1
        self.dry_run = 0
        self.help = 0
        for attr in self.display_option_names:
            setattr(self, attr, 0)

        # Store the distribution meta-data (name, version, author, and so
        # forth) in a separate object -- we're getting to have enough
        # information here (and enough command-line options) that it's
        # worth it.  Also delegate 'get_XXX()' methods to the 'metadata'
        # object in a sneaky and underhanded (but efficient!) way.
        self.metadata = DistributionMetadata()
        for basename in self.metadata._METHOD_BASENAMES:
            method_name = "get_" + basename
            setattr(self, method_name, getattr(self.metadata, method_name))

        # 'cmdclass' maps command names to class objects, so we
        # can 1) quickly figure out which class to instantiate when
        # we need to create a new command object, and 2) have a way
        # for the setup script to override command classes
        self.cmdclass = {}

        # 'command_packages' is a list of packages in which commands
        # are searched for.  The factory for command 'foo' is expected
        # to be named 'foo' in the module 'foo' in one of the packages
        # named here.  This list is searched from the left; an error
        # is raised if no named package provides the command being
        # searched for.  (Always access using get_command_packages().)
        self.command_packages = None

        # 'script_name' and 'script_args' are usually set to sys.argv[0]
        # and sys.argv[1:], but they can be overridden when the caller is
        # not necessarily a setup script run from the command-line.
        self.script_name = None
        self.script_args = None

        # 'command_options' is where we store command options between
        # parsing them (from config files, the command-line, etc.) and when
        # they are actually needed -- ie. when the command in question is
        # instantiated.  It is a dictionary of dictionaries of 2-tuples:
        #   command_options = { command_name : { option : (source, value) } }
        self.command_options = {}

        # 'dist_files' is the list of (command, pyversion, file) that
        # have been created by any dist commands run so far. This is
        # filled regardless of whether the run is dry or not. pyversion
        # gives sysconfig.get_python_version() if the dist file is
        # specific to a Python version, 'any' if it is good for all
        # Python versions on the target platform, and '' for a source
        # file. pyversion should not be used to specify minimum or
        # maximum required Python versions; use the metainfo for that
        # instead.
        self.dist_files = []

        # These options are really the business of various commands, rather
        # than of the Distribution itself.  We provide aliases for them in
        # Distribution as a convenience to the developer.
        self.packages = None
        self.package_data = {}
        self.package_dir = None
        self.py_modules = None
        self.libraries = None
        self.headers = None
        self.ext_modules = None
        self.ext_package = None
        self.include_dirs = None
        self.extra_path = None
        self.scripts = None
        self.data_files = None
        self.password = ''

        # And now initialize bookkeeping stuff that can't be supplied by
        # the caller at all.  'command_obj' maps command names to
        # Command instances -- that's how we enforce that every command
        # class is a singleton.
        self.command_obj = {}

        # 'have_run' maps command names to boolean values; it keeps track
        # of whether we have actually run a particular command, to make it
        # cheap to "run" a command whenever we think we might need to -- if
        # it's already been done, no need for expensive filesystem
        # operations, we just check the 'have_run' dictionary and carry on.
        # It's only safe to query 'have_run' for a command class that has
        # been instantiated -- a false value will be inserted when the
        # command object is created, and replaced with a true value when
        # the command is successfully run.  Thus it's probably best to use
        # '.get()' rather than a straight lookup.
        self.have_run = {}

        # Now we'll use the attrs dictionary (ultimately, keyword args from
        # the setup script) to possibly override any or all of these
        # distribution options.

        if attrs:
            # Pull out the set of command options and work on them
            # specifically.  Note that this order guarantees that aliased
            # command options will override any supplied redundantly
            # through the general options dictionary.
            options = attrs.get('options')
            if options is not None:
                del attrs['options']
                for (command, cmd_options) in options.items():
                    opt_dict = self.get_option_dict(command)
                    for (opt, val) in cmd_options.items():
                        opt_dict[opt] = ("setup script", val)

            if 'licence' in attrs:
                attrs['license'] = attrs['licence']
                del attrs['licence']
                msg = "'licence' distribution option is deprecated; use 'license'"
                if warnings is not None:
                    warnings.warn(msg)
                else:
                    sys.stderr.write(msg + "\n")

            # Now work on the rest of the attributes.  Any attribute that's
            # not already defined is invalid!
            for (key, val) in attrs.items():
                if hasattr(self.metadata, "set_" + key):
                    getattr(self.metadata, "set_" + key)(val)
                elif hasattr(self.metadata, key):
                    setattr(self.metadata, key, val)
                elif hasattr(self, key):
                    setattr(self, key, val)
                else:
                    msg = "Unknown distribution option: %s" % repr(key)
                    warnings.warn(msg)

        # no-user-cfg is handled before other command line args
        # because other args override the config files, and this
        # one is needed before we can load the config files.
        # If attrs['script_args'] wasn't passed, assume false.
        #
        # This also make sure we just look at the global options
        self.want_user_cfg = True

        if self.script_args is not None:
            for arg in self.script_args:
                if not arg.startswith('-'):
                    break
                if arg == '--no-user-cfg':
                    self.want_user_cfg = False
                    break

        self.finalize_options()
def __init__ ( self , attrs = None ) : # Default values for our command-line options self . verbose = 1 self . dry_run = 0 self . help = 0 for attr in self . display_option_names : setattr ( self , attr , 0 ) # Store the distribution meta-data (name, version, author, and so # forth) in a separate object -- we're getting to have enough # information here (and enough command-line options) that it's # worth it.  Also delegate 'get_XXX()' methods to the 'metadata' # object in a sneaky and underhanded (but efficient!) way. self . metadata = DistributionMetadata ( ) for basename in self . metadata . _METHOD_BASENAMES : method_name = "get_" + basename setattr ( self , method_name , getattr ( self . metadata , method_name ) ) # 'cmdclass' maps command names to class objects, so we # can 1) quickly figure out which class to instantiate when # we need to create a new command object, and 2) have a way # for the setup script to override command classes self . cmdclass = { } # 'command_packages' is a list of packages in which commands # are searched for.  The factory for command 'foo' is expected # to be named 'foo' in the module 'foo' in one of the packages # named here.  This list is searched from the left; an error # is raised if no named package provides the command being # searched for.  (Always access using get_command_packages().) self . command_packages = None # 'script_name' and 'script_args' are usually set to sys.argv[0] # and sys.argv[1:], but they can be overridden when the caller is # not necessarily a setup script run from the command-line. self . script_name = None self . script_args = None # 'command_options' is where we store command options between # parsing them (from config files, the command-line, etc.) and when # they are actually needed -- ie. when the command in question is # instantiated.  It is a dictionary of dictionaries of 2-tuples: #   command_options = { command_name : { option : (source, value) } } self . command_options = { } # 'dist_files' is the list of (command, pyversion, file) that # have been created by any dist commands run so far. This is # filled regardless of whether the run is dry or not. pyversion # gives sysconfig.get_python_version() if the dist file is # specific to a Python version, 'any' if it is good for all # Python versions on the target platform, and '' for a source # file. pyversion should not be used to specify minimum or # maximum required Python versions; use the metainfo for that # instead. self . dist_files = [ ] # These options are really the business of various commands, rather # than of the Distribution itself.  We provide aliases for them in # Distribution as a convenience to the developer. self . packages = None self . package_data = { } self . package_dir = None self . py_modules = None self . libraries = None self . headers = None self . ext_modules = None self . ext_package = None self . include_dirs = None self . extra_path = None self . scripts = None self . data_files = None self . password = '' # And now initialize bookkeeping stuff that can't be supplied by # the caller at all.  'command_obj' maps command names to # Command instances -- that's how we enforce that every command # class is a singleton. self . command_obj = { } # 'have_run' maps command names to boolean values; it keeps track # of whether we have actually run a particular command, to make it # cheap to "run" a command whenever we think we might need to -- if # it's already been done, no need for expensive filesystem # operations, we just check the 'have_run' dictionary and carry on. # It's only safe to query 'have_run' for a command class that has # been instantiated -- a false value will be inserted when the # command object is created, and replaced with a true value when # the command is successfully run.  Thus it's probably best to use # '.get()' rather than a straight lookup. self . have_run = { } # Now we'll use the attrs dictionary (ultimately, keyword args from # the setup script) to possibly override any or all of these # distribution options. if attrs : # Pull out the set of command options and work on them # specifically.  Note that this order guarantees that aliased # command options will override any supplied redundantly # through the general options dictionary. options = attrs . get ( 'options' ) if options is not None : del attrs [ 'options' ] for ( command , cmd_options ) in options . items ( ) : opt_dict = self . get_option_dict ( command ) for ( opt , val ) in cmd_options . items ( ) : opt_dict [ opt ] = ( "setup script" , val ) if 'licence' in attrs : attrs [ 'license' ] = attrs [ 'licence' ] del attrs [ 'licence' ] msg = "'licence' distribution option is deprecated; use 'license'" if warnings is not None : warnings . warn ( msg ) else : sys . stderr . write ( msg + "\n" ) # Now work on the rest of the attributes.  Any attribute that's # not already defined is invalid! for ( key , val ) in attrs . items ( ) : if hasattr ( self . metadata , "set_" + key ) : getattr ( self . metadata , "set_" + key ) ( val ) elif hasattr ( self . metadata , key ) : setattr ( self . metadata , key , val ) elif hasattr ( self , key ) : setattr ( self , key , val ) else : msg = "Unknown distribution option: %s" % repr ( key ) warnings . warn ( msg ) # no-user-cfg is handled before other command line args # because other args override the config files, and this # one is needed before we can load the config files. # If attrs['script_args'] wasn't passed, assume false. # # This also make sure we just look at the global options self . want_user_cfg = True if self . script_args is not None : for arg in self . script_args : if not arg . startswith ( '-' ) : break if arg == '--no-user-cfg' : self . want_user_cfg = False break self . finalize_options ( )