[Tutor] Applications/examples of some advanced Py features, please !

[Bob Gailer]

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Regarding lambda, it is an abbreviated way of defining a function. The 
limitation is that the body of the function is one expression whose value 
is returned.

f = lambda x, y:x+y

is the same as

def f(x, y):
   return x+y

It is useful when you only need to refer to the function once, as in:
filter(lambda x:x>5, some-sequence-of-numbers)

That's all I have to say about lambda, except that, if you want to use it 
with list comprehension the syntax is a little tricky:
[(lambda x:x>5)(item) for item in some-sequence-of-numbers]

Bob Gailer
mailto:ramrom@earthling.net
303 442 2625

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