61 lines
897 B
Python
61 lines
897 B
Python
a = [1, 2, 3, 4, 5, 6, 7, 8, 9]
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#################
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# List indexing #
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#################
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# Classical position indexing
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i = 0
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while i < len(a):
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print(a[i])
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i += 1
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# Negative indices
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print(a[-1])
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print(a[-2])
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print(a[-3])
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################
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# List slicing #
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################
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# Elements between indices 3 and 7
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print(a[3:7])
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# Elements from index 5 onwards
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print(a[5:])
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# Elements from the start up to index 8
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print(a[:8])
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#######################
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# List comprehensions #
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#######################
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# The first 10 square natural numbers
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l = [x * x for x in range(1, 10)]
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print(l)
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# The first even square natural numbers
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l = [x * x for x in range(1, 10) if (x * x) % 2 == 0]
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print(l)
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# Some numbers from the first list
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l = [x for x in a if x > 2 and x < 7]
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print(l)
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#######
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# zip #
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#######
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l = [x for x in zip([1, 2, 3, 4], ["a", "b", "c"], ["Hello", ",", "World", "!"])]
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print(l)
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