Notice: While JavaScript is not essential for this website, your interaction with the content will be limited. Please turn JavaScript on for the full experience.
...lambda self: self) Type annotations for pattern variables. The proposal was to combine patterns with type annotations: match x: case [a: int, b: str]: print(f"An int {a} and a string {b}:) case [a: int, b: int, c: int]: print("Three ints", a, b, c) ... This idea has a lot of problems. For one, the colon can only be used inside of brackets or parentheses, otherwise the syntax becomes ambiguous. And because Python disallows isinstance() checks on generic types, type annotations co...
...lambda functions) This PEP proposes elevating most of the current behaviour of the CPython reference implementation to become part of the language specification, except that each call to locals() at function scope will create a new dictionary object, rather than caching a common dict instance in the frame object that each invocation will update and return. This PEP also proposes to largely eliminate the concept of a separate "tracing" mode from the CPython reference implementation. In releases ...
...lambda: filelike.read(block_size), '') If the server or gateway supplies wsgi.file_wrapper, it must be a callable that accepts one required positional parameter, and one optional positional parameter. The first parameter is the file-like object to be sent, and the second parameter is an optional block size "suggestion" (which the server/gateway need not use). The callable must return an iterable object, and must not perform any data transmission until and unless the server/gateway actually re...
...Lambda Suzi, Martelli SD 316 Programming by Contract for Python Way SD 323 Copyable Iterators Martelli SD 337 Logging Usage in the Standard Library Dubner SD 368 Standard image protocol and class Mastrodomenico SD 400 Deprecate codecs.StreamReader and codecs.StreamWriter Stinner SD 403 General purpose decorator clause (aka "@in" clause) Coghlan PD 407 New release cycle and introducing long-term support ... Pitrou, Brandl, Warsaw SD 419 Protecting cleanup statements from interruptions Col...
...lambda expression. SF bug 705231: builtin pow() no longer lets the platform C pow() raise -1.0 to integer powers, because (at least) glibc gets it wrong in some cases. The result should be -1.0 if the power is odd and 1.0 if the power is even, and any float with a sufficiently large exponent is (mathematically) an exact even integer. SF bug 759227: A new-style class that implements __nonzero__() must return a bool or int (but not an int subclass) from that method. This matches the restriction...