[$] Alternative syntax for Python's lambda

The Python lambdakeyword, which can be used to create small, anonymous functions, comes from the world of functionalprogramming, but is perhaps not the most beloved of Python features.In part, that may be because it is somewhat clunky to use, especially incomparison to the shorthand notation offered by other languages, such asJavaScript. That has led to some discussions on possible changes to lambda in Pythonmailing lists since mid-February.