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This chapter is from the book

This chapter is from the book

Core Python Programming, 2nd EditionCore Python Programming, 2nd Edition

Learn More Buy

This chapter is from the book

This chapter is from the book

Core Python Programming, 2nd EditionCore Python Programming, 2nd Edition

Learn More Buy

2.14 List Comprehensions

These are just fancy terms to indicate how you can programmatically use a for loop to put together an entire list on a single line: 

>>> squared = [x ** 2 for x in range(4)]
>>> for i in squared:
...    print i

0
1
4
9

List comprehensions can do even fancier things like being selective of what to include in the new list:

>>> sqdEvens = [x ** 2 for x in range(8) if not x % 2]
>>>
>>> for i in sqdEvens:
...    print i

0
4
16
36

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