sys.stdin and re.search

[Jimmie Fulton]

I'm unable to get any matches with re in a loop when the file I'm looping
over is stdin.  When I use open(), it works fine.  Any hints?

Sample Non-working code...
<code>
import re,sys

pattern = re.compile(r"(\b[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}\b)")

line = sys.stdin.readline()
while line:
	match = pattern.search(line)
	if match:
		print match.groups()
	line = sys.stdin.readline()
</code>


Sample Working code...
<code>
import re,sys

pattern = re.compile(r"(\b[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}\b)")

file = open('myfile','r')

line = file.readline()
while line:
	match = pattern.search(line)
	if match:
		print match.groups()
	line = file.readline()
</code>

Thanks for any advice you can give,

Jimmie Fulton