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Unverified Commit 5b0181d1 authored by Terry Jan Reedy's avatar Terry Jan Reedy Committed by GitHub
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bpo-41774: Add programming FAQ entry (GH-22402)

In the "Sequences (Tuples/Lists)" section, add
"How do you remove multiple items from a list".
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......@@ -1164,6 +1164,21 @@ This converts the list into a set, thereby removing duplicates, and then back
into a list.
How do you remove multiple items from a list
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As with removing duplicates, explicitly iterating in reverse with a
delete condition is one possibility. However, it is easier and faster
to use slice replacement with an implicit or explicit forward iteration.
Here are three variations.::
mylist[:] = filter(keep_function, mylist)
mylist[:] = (x for x in mylist if keep_condition)
mylist[:] = [x for x in mylist if keep_condition]
If space is not an issue, the list comprehension may be fastest.
How do you make an array in Python?
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In Programming FAQ "Sequences (Tuples/Lists)" section, add "How do you
remove multiple items from a list".
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