p = Popen(our_cmd, shell=True, stdout=PIPE, stderr=PIPE)
output = p.communicate()[0]
split = output.strip('\n\t\r').split("\n")
I want to execute this command which is in string our_cmd
what I have tried is this
my @output = `$our_cmd`; ## here command is executing
my @split = grep(s/\s*$//g, @output); ## the format and putting in new array
@split = split("\n", @split);
My command is executing but not taking input properly. I need output in array in format as in Python code.
As far as I can tell from your question, all you need is
my @split = `$our_cmd`;
chomp @split;
I think you're misunderstanding a couple of perl concepts here. For example - you're spliting an array - which doesn't make a lot of sense, because split turns a string into an array, based on a delimiter.
Likewise grep - that's quite an unusual use of grep because you've got a search and replace pattern embedded - usually grep is for filtering based on some boolean expression. (I suspect it works like that, but I'm not entirely sure if your replacement pattern returns true/false, which'll do odd things in a grep context).
So how about instead:
my @output = `$our_command`;
chomp @output; #removes linefeeds from each element.
for ( @output ) { s/[\t\r]//g; }; #removes linefeeds and carriage returns
This will put into @output one element per line (including linefeed) and then remove any \t or \r in there. If you don't want the linefeed, as Borodin says - chomp @output; will deal with that.
As mentioned in comments - this may not exactly reproduce what strip is doing, and the strip operation may be irrelevant in perl.
Testing your grep:
my @test = ( "test aaa bbb", "mooo", " aaa Moo MMOoo", "no thing in it" );
print join ("\n", grep { s/aaa//g } @test );
This does do the search and replace on $_ (each line of the grep), but the replace expression does return a 'true/false' - meaning you effectively discard elements that don't contain the pattern at all.
stderrare being ignored in that Python codestderrin memory and then just discards it at the end. To get stdout lines from a shell command as a list and to discard its stderr:lines = check_output(out_cmd, shell=True, stderr=DEVNULL).splitlines()