python-ideas

parentheses in `struct` format strings for substructures
`pathlib.Path.read_lines` and `pathlib.Path.write_lines`
lazy version of str.splitlines
easier way to manage range objects
    method that returns (start, stop, step) as a tuple
    methods that take return modified copies 
ChainSet
OrderedSet
read-only proxies for lists and sets
collections.abc classes should have useful reprs
optionally ensure that all keys are strings when encoding into json
string literal that doesn't even allow escaping quotes
iterator that remembers current value
currying as a method on functions
list literals should be properly sized
list comprehensions should use length_hint