python - 使用索引切片打印字符串中的每个单词

Question

我想使用索引切片将 word = "They stumple who run fast" 中的每个单词打印在新的一行上。

我试过使用 while 循环，比如在每个空格后打印单词

word = "They stumble who run fast"
space = word.count(' ')
start = 0
while space != -1:
   print(word[start:space])

结果应该是这样的:

They
stumble
who
run
fast

Answer 1

如果你绝对需要使用索引切片:

word = "They stumble who run fast"

indexes = [i for i, char in enumerate(word) if char == ' ']

for i1, i2 in zip([None] + indexes, indexes + [None]):
    print(word[i1:i2].strip())

输出:

They
stumble
who
run
fast

但为什么不用.split() ？

word = "They stumble who run fast"
print(*word.split(), sep='\n')

输出:

They
stumble
who
run
fast