<p>下面是对你问题的另一个回答：</p>
<pre><code>data = """
1. Track1 03:01
VOC:PersonA
LYR：LyrcistA
COM：ComposerA
ARR：ArrangerA
ARR：ArrangerB
2. Track2 04:18
VOC:PersonB
VOC:PersonC
LYR：LyrcistA
LYR：LyrcistC
COM：ComposerA
ARR：ArrangerA"""
import re
import collections
# Regular expression to pull apart the headline of each entry
headlinePattern = re.compile(r"(\d+)\.\s+(.*?)\s+(\d\d:\d\d)")
def main():
# break the data into lines
lines = data.strip().split("\n")
# while we have more lines...
while lines:
# The next line should be a title line
line = lines.pop(0)
m = headlinePattern.match(line)
if not m:
raise Exception("Unexpected data format")
id = m.group(1)
title = m.group(2)
length = m.group(3)
people = collections.defaultdict(list)
# Now read person lines until we hit a blank line or the end of the list
while lines:
line = lines.pop(0)
if not line:
break
# Break the line into label and name
label, name = re.split(r"\W+", line, 1)
# Add this entry to a map of lists, where the map's keys are the label and the
# map's values are all the people who had that label
people[label].append(name)
# Now we have everything for one entry in the data. Print everything we got.
print("id:", id, "title:", title, "length:", length)
print(" - ".join(["; ".join(person) for person in people.values()]))
# go on to the next entry...
main()
</code></pre>
<p>结果:</p>
<pre><code>id: 1 title: Track1 length: 03:01
PersonA - LyrcistA - ComposerA - ArrangerA; ArrangerB
id: 2 title: Track2 length: 04:18
PersonB; PersonC - LyrcistA; LyrcistC - ComposerA - ArrangerA
</code></pre>
<p>如果你真的想让所有人都在上面，你可以把打印标题信息的那行注释掉。如果要从用户提示符读取数据，只需将内置的<code>data</code>替换为<code>data = input("")</code></p>
