REnvironment

class REnvironment(*maps, frame=None)

R environment.

Methods

clear()	Clear maps[0], leaving maps[1:] intact.
copy()	New ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]
fromkeys(iterable, *args)	Create a ChainMap with a single dict created from the iterable.
get(k[,d])
items()
keys()
new_child([m])	New ChainMap with a new map followed by all previous maps.
pop(key, *args)	Remove key from maps[0] and return its value.
popitem()	Remove and return an item pair from maps[0].
setdefault(k[,d])
update([E, ]**F)	If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v
values()

Parameters:

• maps (MutableMapping[str, Any])

• frame (Mapping[str, Any] | None)

clear()

Clear maps[0], leaving maps[1:] intact.

copy()

New ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]

classmethod fromkeys(iterable, *args)

Create a ChainMap with a single dict created from the iterable.

get(k[, d]) → D[k] if k in D, else d.  d defaults to None.

items() → a set-like object providing a view on D's items

keys() → a set-like object providing a view on D's keys

new_child(m=None)

New ChainMap with a new map followed by all previous maps. If no map is provided, an empty dict is used.

pop(key, *args)

Remove key from maps[0] and return its value. Raise KeyError if key not in maps[0].

popitem()

Remove and return an item pair from maps[0]. Raise KeyError is maps[0] is empty.

setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D

update([E, ]**F) → None.  Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E: D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → an object providing a view on D's values