capybara/virtualenv/lib/python2.7/site-packages/pip/compat/dictconfig.py
def configure_handler(self, config):
        """Configure a handler from a dictionary."""
        formatter = config.pop('formatter', None)
        if formatter:
            try:
                formatter = self.config['formatters'][formatter]
            except StandardError as e:
                raise ValueError('Unable to set formatter '
                                 '%r: %s' % (formatter, e))
        level = config.pop('level', None)
        filters = config.pop('filters', None)
        if '()' in config:
            c = config.pop('()')
            if not hasattr(c, '__call__') and hasattr(types, 'ClassType') and type(c) != types.ClassType:
                c = self.resolve(c)
            factory = c
        else:
            klass = self.resolve(config.pop('class'))
            # Special case for handler which refers to another handler
            if issubclass(klass, logging.handlers.MemoryHandler) and\
                'target' in config:
                try:
                    config['target'] = self.config['handlers'][config['target']]
                except StandardError as e:
                    raise ValueError('Unable to set target handler '
                                     '%r: %s' % (config['target'], e))
            elif issubclass(klass, logging.handlers.SMTPHandler) and\
                'mailhost' in config:
                config['mailhost'] = self.as_tuple(config['mailhost'])
            elif issubclass(klass, logging.handlers.SysLogHandler) and\
                'address' in config:
                config['address'] = self.as_tuple(config['address'])
            factory = klass
        kwargs = dict((k, config[k]) for k in config if valid_ident(k))
        try:
            result = factory(**kwargs)
        except TypeError as te:
            if "'stream'" not in str(te):
                raise
            # The argument name changed from strm to stream
            # Retry with old name.
            # This is so that code can be used with older Python versions
            #(e.g. by Django)
            kwargs['strm'] = kwargs.pop('stream')
            result = factory(**kwargs)
        if formatter:
            result.setFormatter(formatter)
        if level is not None:
            result.setLevel(_checkLevel(level))
        if filters:
            self.add_filters(result, filters)
        return result
def configure_handler(self, config):
        """Configure a handler from a dictionary."""
        formatter = config.pop('formatter', None)
        if formatter:
            try:
                formatter = self.config['formatters'][formatter]
            except StandardError as e:
                raise ValueError('Unable to set formatter '
                                 '%r: %s' % (formatter, e))
        level = config.pop('level', None)
        filters = config.pop('filters', None)
        if '()' in config:
            c = config.pop('()')
            if not hasattr(c, '__call__') and hasattr(types, 'ClassType') and type(c) != types.ClassType:
                c = self.resolve(c)
            factory = c
        else:
            klass = self.resolve(config.pop('class'))
            # Special case for handler which refers to another handler
            if issubclass(klass, logging.handlers.MemoryHandler) and\
                'target' in config:
                try:
                    config['target'] = self.config['handlers'][config['target']]
                except StandardError as e:
                    raise ValueError('Unable to set target handler '
                                     '%r: %s' % (config['target'], e))
            elif issubclass(klass, logging.handlers.SMTPHandler) and\
                'mailhost' in config:
                config['mailhost'] = self.as_tuple(config['mailhost'])
            elif issubclass(klass, logging.handlers.SysLogHandler) and\
                'address' in config:
                config['address'] = self.as_tuple(config['address'])
            factory = klass
        kwargs = dict((k, config[k]) for k in config if valid_ident(k))
        try:
            result = factory(**kwargs)
        except TypeError as te:
            if "'stream'" not in str(te):
                raise
            # The argument name changed from strm to stream
            # Retry with old name.
            # This is so that code can be used with older Python versions
            #(e.g. by Django)
            kwargs['strm'] = kwargs.pop('stream')
            result = factory(**kwargs)
        if formatter:
            result.setFormatter(formatter)
        if level is not None:
            result.setLevel(_checkLevel(level))
        if filters:
            self.add_filters(result, filters)
        return result
Configure a handler from a dictionary.