从python中提取多行

Question

我正在使用python并尝试从.txt文件中提取数字,然后将它们分组为多个类别..txt文件如下所示:

IF 92007<=ZIPCODE<=92011 OR ZIPCODE=92014 OR ZIPCODE=92024

OR 92054<=ZIPCODE<=92058 OR ZIPCODE=92067 OR ZIPCODE=92075

OR ZIPCODE=92083 OR ZIPCODE=92084 OR ZIPCODE=92091 OR ZIPCODE=92672

OR ZIPCODE=92081 THEN REGION=1;      ** N COASTAL **;

此代码用于从第一行提取数字:

import re

TXTPATH = 'C:/zipcode_mapping.txt'

f = open(TXTPATH,'r')

expr= "IF 92007<=ZIPCODE<=92011 OR ZIPCODE=92014 OR ZIPCODE=92024"

for line in f:
    L = line    
    print(L)
    matches = re.findall("([0-9]{5})",expr)
    for match in matches:
        print match

我似乎无法从其他行中提取数字.有什么建议？

Answer 1

做就是了:

matches = re.findall("([0-9]{5})",f.read())

您可以一次性提取所有内容 - 无需循环遍历.