cleanest way to call one function on a list of items
In python 2, I used map to apply a function to several items, for instance, to remove all items matching a pattern:
iterator
Iterate over the lines of a string
I have a multi-line string defined like this:
Why does next raise a ‘StopIteration’, but ‘for’ do a normal return?
In this piece of code, why does using for result in no StopIteration
or is the for loop trapping all exceptions and then silently exiting?
In which case, why do we have the extraneous return?? Or is the
raise StopIteration caused by: return None?
Performance Advantages to Iterators?
What (if any) performance advantages are offered by using iterators. It seems like the ‘Right Way’ to solve many problems, but does it create faster/more memory-conscious code? I’m thinking specifically in Python, but don’t restrict answers to just that.
has_next in Python iterators?
Haven’t Python iterators got a has_next method?
Python range() and zip() object type
I understand how functions like range() and zip() can be used in a for loop. However I expected range() to output a list – much like seq in the unix shell. If I run the following code: