Ravi Kondamuru a écrit :
I am trying to read a binary log file to extract system counters. These
counters will then be used to generate web-based graphs using the
chart-director api in python. For extracting the counters I planning to
write a program in C to read and give the output as lists for use by
chart-director. If possible i would like to do the parsing of data only once
in C on the log file and pass the processed output for direct use by
python.
I have thought about having to populate a database first but will prefer to
avoid having another intermediate datastore (apart from the log file).
thanks,
Ravi.
On Thu, Dec 11, 2008 at 10:27 AM, Steve Willoughby <st...@alchemy.com>wrote:
Ravi Kondamuru wrote:
Hi,
I am writing a script to read list output from a C executable. How should
c program be written so that python can read the output as a list?
Any pointers to info on this appreciated.
The possibilities are truly wide open on this. Python can read a variety
of standard formats (and of course can have custom code to read anything.
Depending on what the data involved actually are, you need to decide what
format works best.
A simple approach is to have the C program write simple CSV output, and use
Python's csv module to read it. A more complex solution might be to use
XML. There are approximately 52,495,102 other possibilities available too,
so you have lots of room to work out what's best for your application.
More specific information on what you're trying to accomplish would help
narrow it down as well.
What type are these system counters? If you want to avoid reparsing in python,
why not let C write a valid python literal, then simply import? (depends on
what "huge" means for you). Assuming they are ints:
=========
counters.py:
counters = [
123,
456,
789,
...
]
=======
prog.py:
from counters import counters
denis
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