environment/lib/python2.7/site-packages/nose/plugins/attrib.py
def configure(self, options, config):
        """Configure the plugin and system, based on selected options.

        attr and eval_attr may each be lists.

        self.attribs will be a list of lists of tuples. In that list, each
        list is a group of attributes, all of which must match for the rule to
        match.
        """
        self.attribs = []

        # handle python eval-expression parameter
        if compat_24 and options.eval_attr:
            eval_attr = tolist(options.eval_attr)
            for attr in eval_attr:
                # "<python expression>"
                # -> eval(expr) in attribute context must be True
                def eval_in_context(expr, obj, cls):
                    return eval(expr, None, ContextHelper(obj, cls))
                self.attribs.append([(attr, eval_in_context)])

        # attribute requirements are a comma separated list of
        # 'key=value' pairs
        if options.attr:
            std_attr = tolist(options.attr)
            for attr in std_attr:
                # all attributes within an attribute group must match
                attr_group = []
                for attrib in attr.strip().split(","):
                    # don't die on trailing comma
                    if not attrib:
                        continue
                    items = attrib.split("=", 1)
                    if len(items) > 1:
                        # "name=value"
                        # -> 'str(obj.name) == value' must be True
                        key, value = items
                    else:
                        key = items[0]
                        if key[0] == "!":
                            # "!name"
                            # 'bool(obj.name)' must be False
                            key = key[1:]
                            value = False
                        else:
                            # "name"
                            # -> 'bool(obj.name)' must be True
                            value = True
                    attr_group.append((key, value))
                self.attribs.append(attr_group)
        if self.attribs:
            self.enabled = True
def configure(self, options, config):
        """Configure the plugin and system, based on selected options.

        attr and eval_attr may each be lists.

        self.attribs will be a list of lists of tuples. In that list, each
        list is a group of attributes, all of which must match for the rule to
        match.
        """
        self.attribs = []

        # handle python eval-expression parameter
        if compat_24 and options.eval_attr:
            eval_attr = tolist(options.eval_attr)
            for attr in eval_attr:
                # "<python expression>"
                # -> eval(expr) in attribute context must be True
                def eval_in_context(expr, obj, cls):
                    return eval(expr, None, ContextHelper(obj, cls))
                self.attribs.append([(attr, eval_in_context)])

        # attribute requirements are a comma separated list of
        # 'key=value' pairs
        if options.attr:
            std_attr = tolist(options.attr)
            for attr in std_attr:
                # all attributes within an attribute group must match
                attr_group = []
                for attrib in attr.strip().split(","):
                    # don't die on trailing comma
                    if not attrib:
                        continue
                    items = attrib.split("=", 1)
                    if len(items) > 1:
                        # "name=value"
                        # -> 'str(obj.name) == value' must be True
                        key, value = items
                    else:
                        key = items[0]
                        if key[0] == "!":
                            # "!name"
                            # 'bool(obj.name)' must be False
                            key = key[1:]
                            value = False
                        else:
                            # "name"
                            # -> 'bool(obj.name)' must be True
                            value = True
                    attr_group.append((key, value))
                self.attribs.append(attr_group)
        if self.attribs:
            self.enabled = True
Configure the plugin and system, based on selected options.

        attr and eval_attr may each be lists.

        self.attribs will be a list of lists of tuples. In that list, each
        list is a group of attributes, all of which must match for the rule to
        match.