1. 單數(shù)據(jù)運算

In [43]: a = [1,2,3,4,5]In [44]: b = [x*2 for x in a]In [45]: b
Out[45]: [2, 4, 6, 8, 10]In [46]: c = [str(x) for x in a]In [47]: c
Out[47]: ['1', '2', '3', '4', '5']

2. 含有 if 條件

In [48]: a = range(11)In [49]: b = [x*2 for x in a if x%2 == 0]In [50]: b
Out[50]: [0, 4, 8, 12, 16, 20]In [55]: c = [i*j for i in range(3) for j in range(3)]In [56]: c
Out[56]: [0, 0, 0, 0, 1, 2, 0, 2, 4]

3. 含有 zip

In [57]: a = range(3)In [58]: b = ["a", 'b', 'c']In [59]: m = [str(x) + str(y) for x, y in zip(a,b)]In [60]: m
Out[60]: ['0a', '1b', '2c']

4. 含有字典

In [61]: d = {'a':1, 'b':2, 'c':3}In [67]: n = [k+ ':' + str(v) for k, v in d.items()]In [68]: n
Out[68]: ['a:1', 'b:2', 'c:3']

5. 差集

In [72]: a = ['1', '2', '3', '4']In [73]: b = ['1', '2', '5', '6']In [74]: c = [x for x in a if x not in b]In [75]: c
Out[75]: ['3', '4']

總結

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