On 11/11/2010 00:29, James Mills wrote:
On Thu, Nov 11, 2010 at 8:56 AM, Emile van Sebille<em...@fenx.com> wrote:
Easiest would be print [ v for v in sys.stdin.readlines()[:5] ] but that
still reads the entire sys.stdin (whatever it may be...)
Here's a way of doing the same thing without consuming the entire
stream (sys.stdin):
#!/usr/bin/env python
import sys
print [v for v in list(line for line in sys.stdin)[:5]]
This uses a generator expression to read from stdin, converts this to
a list (only getting the first 5 items).
'list' will exhaust the input, then the slicing will return at most 5
lines.
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