python中的正则表达式

I'd suggest you just take the lines with the good beginning M\d{2}\.\d+.*, the M and the digits

diagnosis_Answer = re.findall(r"M\d{2}\.\d+.*", text)

您可以使用

DIAGNOSIS\n(.*)\n.*RTHOSIS DEVICE

See the regex demo. Details:

• DIAGNOSIS\n - DIAGNOSIS and a newline
• (.*) - Group 1: any 0 or more chars other than line break chars, as many as possible
• \n - a newline
• .*RTHOSIS DEVICE - any 0 or more chars other than line break chars, as many as possible and then RTHOSIS DEVICE string.

Python demo:

import re
txt = 'DIAGNOSIS\nM19.072 Primary osteoarthritis, left ankle and foot\nO   RTHOSIS DEVICE(S) PRESCRIBED\n\ngfgfgfggfgfg\n111111111112ffffffffff\ngfggggg\nwwwwwwwwww\n\nDIAGNOSIS\nM17.12 Unilateral primary osteoarthritis, left knee\nO   RTHOSIS DEVICE(S) PRESCRIBED\n\n\ngfgfgfggfgfg\n11111ttttfffff\ngffffffffffffffffffffffffwwwwwwwwwree\n\nDIAGNOSIS\nM75.42 Impingement syndrome of left shoulder\nO   RTHOSIS DEVICE(S) PRESCRIBED\n\n\ngfgfgfggfgfg\n111111111112ffffffffff\ngfggggg\nwwwwwwwwww\n'
diagnosis_Answer = re.findall(r"DIAGNOSIS\n(.*)\n.*RTHOSIS DEVICE", txt)
print(diagnosis_Answer)