Module refinery.units.meta.rmv

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from refinery.units import Unit, Chunk, Arg
from refinery.lib.meta import metavars


class rmv(Unit):
    """
    Short for "ReMove Variable": Removes meta variables that were created in the current frame. If no
    variable names are given, the unit removes all of them. Note that this can recover variables from
    outer frames that were previously shadowed.
    """
    def __init__(self, *names: Arg(type=str, metavar='name', help='Name of a variable to be removed.')):
        super().__init__(names=names)

    def process(self, data: Chunk):
        meta = metavars(data)
        keys = self.args.names or list(meta.variable_names())
        for key in keys:
            meta.discard(key)
        return data

Classes

class rmv (*names)

Short for "ReMove Variable": Removes meta variables that were created in the current frame. If no variable names are given, the unit removes all of them. Note that this can recover variables from outer frames that were previously shadowed.

Expand source code Browse git 
class rmv(Unit):
    """
    Short for "ReMove Variable": Removes meta variables that were created in the current frame. If no
    variable names are given, the unit removes all of them. Note that this can recover variables from
    outer frames that were previously shadowed.
    """
    def __init__(self, *names: Arg(type=str, metavar='name', help='Name of a variable to be removed.')):
        super().__init__(names=names)

    def process(self, data: Chunk):
        meta = metavars(data)
        keys = self.args.names or list(meta.variable_names())
        for key in keys:
            meta.discard(key)
        return data

Ancestors

Class variables

var required_dependencies
var optional_dependencies

Inherited members