<p>假设您的数据是在名为<code>tracks.txt</code>的文件中指定的格式,则以下代码应该可以工作:</p>
<pre><code>import re
with open('tracks.txt') as fp:
tracklines = fp.read().splitlines()
def split_tracks(lines):
track = []
all_tracks = []
while True:
try:
if lines[0] != '':
track.append(lines.pop(0))
else:
all_tracks.append(track)
track = []
lines.pop(0)
except:
all_tracks.append(track)
return all_tracks
def gather_attrs(tracks):
track_attrs = []
for track in tracks:
attrs = {}
for line in track:
match = re.match('([A-Z]{3}):', line)
if match:
attr = line[:3]
val = line[4:].strip()
try:
attrs[attr].append(val)
except KeyError:
attrs[attr] = [val]
track_attrs.append(attrs)
return track_attrs
if __name__ == '__main__':
tracks = split_tracks(tracklines)
attrs = gather_attrs(tracks)
for track in attrs:
semicolons = map(lambda va: '; '.join(va), track.values())
hyphens = ' - '.join(semicolons)
print(hyphens)
</code></pre>
<p>唯一需要更改的是数据中的冒号字符-其中一些是ASCII冒号<code>:</code>,另一些是Unicode冒号<code>:</code>,这将破坏正则表达式</p>