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1 import itertools
2
3
4 b = list(itertools.chain('ABC', range(2), [55,434,665,86]))
5 print('b:', b) # ['A', 'B', 'C', 0, 1, 55, 434, 665, 86]
6
7 b1 = list(enumerate("ABC"))
8 print('b1:',b1) # [(0, 'A'), (1, 'B'), (2, 'C')]
9
10 b2 = list(itertools.chain(enumerate("ABC")))
11 print("b2:", b2) # [(0, 'A'), (1, 'B'), (2, 'C')]
12
13 b3 = list(itertools.chain.from_iterable(enumerate('ABC')))
14 print('b3:', b3) #[0, 'A', 1, 'B', 2, 'C']
15
16
17 b4 = list(zip('ABC', range(5)))
18 print('b4:', b4) # [('A', 0), ('B', 1), ('C', 2)]
19
20
21 b5 = list(itertools.zip_longest('ABC', range(5)))
22 print('b5:', b5) #[('A', 0), ('B', 1), ('C', 2), (None, 3), (None, 4)]
23
24
25 b6 = list(itertools.zip_longest('ABC', range(5), fillvalue = '?'))
26 print('b6:', b6) #[('A', 0), ('B', 1), ('C', 2), ('?', 3), ('?', 4)]
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标签：ABC,函数,生成器,list,range,itertools,库中,print From： https://www.cnblogs.com/bravesunforever/p/17417584.html