>>> def foo(src, n):
... res = []
... [[res.append(e) for e in src] for _ in range(n)]
... return res
>>> foo(['a', 'b', 'c'], 3)
['a', 'b', 'c', 'a', 'b', 'c', 'a', 'b', 'c']
>>> a = ['a', 'b', 'c']
>>> n = 3
>>> [e for _ in range(n) for e in a]
['a', 'b', 'c', 'a', 'b', 'c', 'a', 'b', 'c']
더 간단하게도 되네
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