New submission from Sasha Kacanski <skacan...@gmail.com>: Hi, In ChainMap example c = ChainMap() # Create root context d = c.new_child() # Create nested child context e = c.new_child() # Child of c, independent from d e.maps[0] # Current context dictionary -- like Python's locals() e.maps[-1] # Root context -- like Python's globals() e.parents # Enclosing context chain -- like Python's nonlocals
d['x'] # Get first key in the chain of contexts d['x'] = 1 # Set value in current context d['x'] - will raise key does not exist error so simple fix is to flip last two lines... I know, possibly anal but look love Python and would like to help new folks to not get confused if they play with example in cPython shell... --best ---------- assignee: docs@python components: Documentation messages: 305876 nosy: Sasha Kacanski, docs@python priority: normal severity: normal status: open title: 8.3. collections — Container datatypes versions: Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue31982> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
