concatenating the two variable output into one line python3

Question

I have two variables holding the ouputs from using subprocess output and want the output of the both variable to be printed into one line.. below is the details..

cmd1=subprocess.Popen("some_command", shell=True, stdout=subprocess.PIPE)
cmd_input1=cmd1.stdout.read().decode('utf8')

cmd_input1 has:

one
two
three
four


cmd2=subprocess.Popen("othere_command", shell=True, stdout=subprocess.PIPE)
cmd_input2=cmd2.stdout.read().decode('utf8')

while cmd_input2 has :
1
2
3
4

I need the print output of both the variables into one line, line below..

one   1
two   2
three 3
four  4

I tried below but not working.. i just started learning python..

print("%  %." % (cmd_input1, cmd_input2)

Its python3 , please guide..

not working, still printing the output into one after another not into one line as expected — user9265709
– user9265709, Commented Jan 27, 2018 at 11:23

ababak · Accepted Answer · 2018-01-27 11:27:13Z

3

You may want to use zip() built-in function to mix two lists and split() to split the output to lists of strings.

Zip will make a list of tuples:

[('one', 1), ('two', 2), ('three', 3), ('four', 4)]

Then you'll need to print it out. Here's the full code:

zipped = zip(cmd_input1.split('\n'), cmd_input2.split('\n'))
for line in zipped:
    print(line[0], line[1])

answered Jan 27, 2018 at 11:27

ababak

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2 Comments

user9265709 Over a year ago

ababak, thx for the great input, that works nice, but it looks like if there are missing value in the cmd_input2 then its taking the next number joining into the cmd_input, would be great to suggest on this

ababak Over a year ago

Well, zip will aggregate elements from each of the lists one by one and it will stop when any of the lists are over. I am not sure what do you mean when you say missing values.

Aran-Fey · Accepted Answer · 2018-01-27 11:27:58Z

0

You can iterate over both outputs simultaneously by splitting them into lines and zipping them:

for out1, out2 in zip(cmd_input1.splitlines(), cmd_input2.splitlines()):
    print(out1.ljust(5), out2)

I also used str.ljust to align the output.

answered Jan 27, 2018 at 11:27

Aran-Fey

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1 Comment

user9265709 Over a year ago

great ans indeed anx for the solution but it looks like if there are missing value in the cmd_input2 then its taking the next number joining into the cmd_input, would be great to suggest on this

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