string = 'apple is a kind of fruit'
print(string.split(sep=' '))
print(string.split())
print(string.split(sep=None))
print(string.split(maxsplit=0))
print(string.split(maxsplit=2))
print(string.split(sep=None,maxsplit=4))
輸出：
['apple', 'is', 'a', 'kind', 'of', 'fruit']
['apple', 'is', 'a', 'kind', 'of', 'fruit']
['apple', 'is', 'a', 'kind', 'of', 'fruit']
['apple is a kind of fruit']
['apple', 'is', 'a kind of fruit']
['apple', 'is', 'a', 'kind', 'of fruit']