从python中提取多行

Question

I'm working with python and am trying to extract numbers from a .txt file and then group them into multiple categories. The .txt file looks like this:

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 **;

This code was used to extract numbers from the first line:

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

I can't seem to pull out the numbers from the other lines though. Any suggestions?

Answer 1

Just do:

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

You can extract them all at once - no need to loop over lines.

Answer 2

你不是只需要将'expr'改为'L'吗？

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

Answer 3

Maybe I'm being naive, but shouldn't you search for numbers in L, instead of in expr?

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