概述
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")谢谢
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'\b\d{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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