Python正则表达式找到输出文件

我有一个输入文件,其中包含一个包含许多五位数ID的 javascript代码.我希望将这些ID放在以下列表中：

53231,53891,72829 etc

这是我的实际python文件：

import re

fobj = open("input.txt","r")
text = fobj.read()

output = re.findall(r'[0-9][0-9][0-9][0-9][0-9]',text)

outp = open("output.txt","w")

我怎么能像我想要的那样在输出文件中获取这些ID？

谢谢

解决方法

import re
# Use "with" so the file will automatically be closed
with open("input.txt","r") as fobj:
    text = fobj.read()
# Use word boundary anchors (b) so only five-digit numbers are matched.
# Otherwise,123456 would also be matched (and the match result would be 12345)!
output = re.findall(r'bd{5}b',text)
# Join the matches together
out_str = ",".join(output)
# Write them to a file,again using "with" so the file will be closed.
with open("output.txt","w") as outp:
    outp.write(out_str)

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