python:截取两个字符串中间的内容
一、目的
cat test.txt
k__Bacteria;p__Verrucomicrobia;c__Verrucomicrobiae;o__Verrucomicrobiales;f__Akkermansiaceae;g__Akkermansia;
二、python3代码
vi get_family.py
#!/usr/bin/env python3
import os, sys, re
ms, infile = sys.argv
with open(infile) as f:
f = f.read()
species = re.findall(r'f__(.*)\.g__', f)
print(''.join(species))
read(): 读取整个文件,使用与小文件,大文件推荐for逐行读取;
re.findall(r'', file): 从整个文件中搜索符合正则的字符串,返回列表
‘’。join(): 将列表拼成字符串输出
python3 get_family.py test.txt
Akkermansiaceae
https://blog.csdn.net/Fairy_teacher/article/details/106916453