在Python中使用分隔符分割大文本文件

在Python中使用分隔符分割大文本文件

您可以使用itertools.groupby对

:Entry

列表中出现的行进行分组：

import itertools as itfilename='test.dat'with open(filename,'r') as f:    for key,group in it.groupby(f,lambda line: line.startswith(':Entry')):        if not key: group = list(group) print(group)

产量

['- Namen', 'John Doen', 'n', '- Daten', '20/12/1979n']['n', '-Namen', 'Jane Doen', '- Daten', '21/12/1979n']

或者，要处理组，您实际上不需要转换

group

为列表：

with open(filename,'r') as f:    for key,group in it.groupby(f,lambda line: line.startswith(':Entry')):        if not key: for line in group:     ...