python: whtat is the right way to remove element from list

google no found... I want two solutions:

1) How to remove an element in a for..in.. loop for a list?
2) How to remove all the elements in the list开发者_Go百科?

1. This is almost never what you want to do. Use a list comprehension to filter out the items you don't want.

2. del L[:]

1) filter()
2) list = []