It seems unreasonably hard to write simple one-line unix command line
filters in python:
eg: ls | python -c "<something> print x.upper()"
to get at sys.stdin or similar needs an import, which makes a
subsequent for-loop illegal.
python -c "import sys; for x in sys.stdin(): print x" <<- SyntaxError
Am I missing something obvious?
The best I've come up with is to use sitecustomize.py to add to
__builtin__
def stdin():
import sys
for x in sys.stdin():
if not x: return
yield x.strip()
import __builtin__
__builtin__.stdin = stdin
This allows
ls | python -c "for x in stdin(): print x.upper()"
Is there a better solution - if not is this worth a PEP?
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