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Full Discussion: Python Cat
Top Forums Shell Programming and Scripting Python Cat Post 302920657 by infinitydon on Friday 10th of October 2014 04:34:27 PM
Old 10-10-2014
Quote:
Originally Posted by Corona688
Your code isn't Python -- just a transparently-thin shrinkwrapping of Python around 99% pure Bourne shell. I'm not sure why you bothered.

Even for shell code this is atrocious, though. You could do this in one awk call instead of umpteen cat's, sed's, tr's, grep's, and kitchen sinks.

I tried to figure out how many extra processes you're wasting, but I lost count. This is going to be extraordinarily, noticeably slow and wasteful, even on a modern computer. Please, seriously consider rewriting this properly, either using native Python features or properly in the shell.
Hi Corona688,

Thanks for your candid opinion, much appreciated. Am still a beginner, I have no programming experience, am just learning on my own via tutorials on the internet.

Be it as it may, my challenge remains "How do I optimize this code seeing that the input file alone from EXPECT statement is over 800 lines and I need to extract about 20 to 30 variables (KPI values) from it".

And I discovered that writing equivalent code for the CAT command in python will use more lines of code?

Or if anyone else has idea, I will appreciate it.

@disedorgue --- I will also check your opinion, thanks for taking time out to suggest an idea.
 

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IDLE(1) 						      General Commands Manual							   IDLE(1)

NAME
IDLE - An Integrated DeveLopment Environment for Python SYNTAX
idle [ -dins ] [ -t title ] [ file ...] idle [ -dins ] [ -t title ] ( -c cmd | -r file ) [ arg ...] idle [ -dins ] [ -t title ] - [ arg ...] DESCRIPTION
This manual page documents briefly the idle command. This manual page was written for Debian because the original program does not have a manual page. For more information, refer to IDLE's help menu. IDLE is an Integrated DeveLopment Environment for Python. IDLE is based on Tkinter, Python's bindings to the Tk widget set. Features are 100% pure Python, multi-windows with multiple undo and Python colorizing, a Python shell window subclass, a debugger. IDLE is cross-plat- form, i.e. it works on all platforms where Tk is installed. OPTIONS
-h Print this help message and exit. -n Run IDLE without a subprocess (see Help/IDLE Help for details). The following options will override the IDLE 'settings' configuration: -e Open an edit window. -i Open a shell window. The following options imply -i and will open a shell: -c cmd Run the command in a shell, or -r file Run script from file. -d Enable the debugger. -s Run $IDLESTARTUP or $PYTHONSTARTUP before anything else. -t title Set title of shell window. A default edit window will be bypassed when -c, -r, or - are used. [arg]* and [file]* are passed to the command (-c) or script (-r) in sys.argv[1:]. EXAMPLES
idle Open an edit window or shell depending on IDLE's configuration. idle foo.py foobar.py Edit the files, also open a shell if configured to start with shell. idle -est "Baz" foo.py Run $IDLESTARTUP or $PYTHONSTARTUP, edit foo.py, and open a shell window with the title "Baz". idle -c "import sys; print sys.argv" "foo" Open a shell window and run the command, passing "-c" in sys.argv[0] and "foo" in sys.argv[1]. idle -d -s -r foo.py "Hello World" Open a shell window, run a startup script, enable the debugger, and run foo.py, passing "foo.py" in sys.argv[0] and "Hello World" in sys.argv[1]. echo "import sys; print sys.argv" | idle - "foobar" Open a shell window, run the script piped in, passing '' in sys.argv[0] and "foobar" in sys.argv[1]. SEE ALSO
python(1). AUTHORS
Various. 21 September 2004 IDLE(1)
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