[Python-Dev] Let's just keep lambda (original) (raw)

Josiah Carlson jcarlson at uci.edu
Thu Feb 9 05:51:33 CET 2006

Jiwon Seo <seojiwon at gmail.com> wrote:

On 2/8/06, Josiah Carlson <jcarlson at uci.edu> wrote: > Closures already exist in Python. > > >>> def foo(bar): > ... return lambda: bar + 1 > ... > >>> a = foo(5) > >>> a() > 6

Not in that we don't have anonymous function (or closure) with multiple statements.

As already said, lambdas (Python's anonymous functions) are limited to a single expression. If you can't do what you want with a single expression, then it probably SHOULD have a name, so you should use a standard function definition.

Also, current limited closure does not capture programming context - or variables.

You should clarify yourself. According to my experience, you can do anything you want with Python closures, it just may take more work than you are used to.

def environment(): env = {} def get_variable(name): return env[name] def set_variable(name, value): env[name] = value def del_variable(name): del env[name] return get_variable, set_variable, del_variable

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