Pyton Regular Expressions - 找到所有以连字符开头的句子并将它们放入列表中

Question

我有一个文本文件，我想解析并将问题和选项放入问题和选项列表中

示例文本：[更新示例文本以包括问题类型和选项中的所有变化类型]

- 26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ; IM

A. observe

B. HBV DNA study\

C. Interferon

D. take liver biopsy

- Trauma è skin erythema and Partiel skin loss ,ttt: surgery

A. H2o irrigation

B. Bicarb. Irrigation

C. Surgical debridment\

- Old female, obese on diet control ,polydipsia , invest. Hba1c 7.5 ,all (random,

Fasting, post prandial ) sugar are mild elevated urine ketone (+) ttt: IM

A. Insulin “ ketonuria “\

B. pioglitazone

C. Thiazolidinediones

D. fourth i forgot (not Metformin nor sulfonylurea)

- Day to day variation of this not suitable for patients under warfarin therapy: IM

A. retinols

B. Fresh fruits and vegitables

C. Meet and paultry\

D. Old cheese

我是 python 的新手，尤其是正则表达式的新手。试图找到将找到以“-”开头的句子以及新行有“A”的正则表达式。, 在 'A.' 之前将其切片 并将问题放入列表中。注意：有些问题有两行长。

也是一个正则表达式，用于将每组选项提取到列表中。所以最终结果将是：

question list = ['- 26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ; IM','- Old female, obese on diet control ,polydipsia , invest. Hba1c 7.5 ,all (random,Fasting, post prandial ) sugar are mild elevated urine ketone (+) ttt:IM ','etc','and so on']

options list = [['A. observe','B. HBV DNA study\','C. Interferon','D. take liver biopsy'],['A. H2o irrigation\','B. Bicarb. Irrigation','C. Surgical debridment',[['A. Something Else','B. Something Else',......,'D.  ']],[etc]]

我猜这会有点复杂，但是对正则表达式部分的任何帮助甚至是开始都会很棒。我有一个包含 1000 个这样的问题和选项的文本文件，理想情况下我想提取所有问题和选项。

import re

with open("julysmalltext.txt") as file:

    content = file.read()

    question_list = re.findall(r'', content)

    options_list = re.findall(r'', content)

Answer 1

这将做到：import re with open("data.txt") as fp:    question_list = list()    options_list = list()    for line in fp.readlines():        question = re.match(r'-.*', line)        if question:            question_list.append(question.group(0))        else:            answer = re.match(r'[ABCD]\..*', line)            if answer.group(0)[0]=='A':                options_list.append([answer.group(0)])            else:                options_list[-1].append(answer.group(0))print(question_list)print(options_list)输出：['- 26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ;IM', '- Trauma è skin erythema and Partiel skin loss ,ttt: surgery'][['A. observe', 'B. HBV DNA study', 'C. Interferon', 'D. take liver biopsy'], ['A. H2o irrigation', 'B. Bicarb. Irrigation', 'C. Surgical debridment']]另一种选择，如果您不需要嵌套问题列表：import rewith open("data.txt") as file:    content = file.read()    question_list = re.findall(r'-.*', content)    options_list = re.findall(r'[ABCD]\..*', content)print(question_list)print(options_list)输出：['- 26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ;IM', '- Trauma è skin erythema and Partiel skin loss ,ttt: surgery']['A. observe', 'B. HBV DNA study', 'C. Interferon', 'D. take liver biopsy', 'A. H2o irrigation', 'B. Bicarb. Irrigation', 'C. Surgical debridment']

Answer 2

试试这个例子。import jsontext = '''- 26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ;IMA. observeB. HBV DNA studyC. InterferonD. take liver biopsy- Trauma è skin erythema and Partiel skin loss ,ttt: surgeryA. H2o irrigation\B. Bicarb. IrrigationC. Surgical debridment'''questions = {}letters = ['A','B','C','D','E',]text = text.split('\n')text[:]          = [x for x in text if x]question = ''for line in text:    if line[0] == '-':        question = line[2:]        questions[question] = {}    elif line[0] in letters:        line = line.split('.',1)        for i in range(len(line)):            line[i] = line[i].strip()        questions[question][line[0]] = line[1]print(json.dumps(questions,indent=2, ensure_ascii=False))输出将非常有条理：{  "26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ;IM": {    "A": "observe",    "B": "HBV DNA study",    "C": "Interferon",    "D": "take liver biopsy"  },  "Trauma è skin erythema and Partiel skin loss ,ttt: surgery": {    "A": "H2o irrigationB. Bicarb. Irrigation",    "C": "Surgical debridment"  }}

Answer 3

简单的：import rewith open("julysmalltext.txt") as file:    content = file.read()questions = re.findall('-.*?(?=\nA)', content)options = re.findall('\w\..*?(?=\n)', content)print(questions)print(options)输出：['- 26 yrs Man Hbsag +ve ,hbeag +ve on routine screening ..what is next ;IM', '- Trauma è skin erythema and Partiel skin loss ,ttt: surgery']['A. observe', 'B. HBV DNA study', 'C. Interferon', 'D. take liver biopsy', 'A. H2o irrigation\\', 'B. Bicarb. Irrigation']打破它：This part:'-'表示字符串必须以'-'This part:'.*?'表示提取中间的所有内容，但不贪心。这部分：'(?=\nA)'表示'A'字符串前面必须有一个换行符和一个右边。