CODEWITHSUNDEEP
pythonsubprocess
bindo
bindo

Reputation: 87

python subprocess output to an array

Can someone tell me how to get the output of the following command using subprocess to a list please? 

curl --silent -u username:password http://localhost:55672/api/queues | sed 's/,/\n/g' | grep '"name"\:' | tr -d "name:" | tr -d -d \"

Tried "subprocess.popen", "subprocess.call" and "subprocess.popen" but to no avail. Below is one example i tried.

import json
import subprocess

HO=subprocess.check_output("curl --silent -u username:passwordhttp://localhost:55672/api/queues | sed 's/,/\n/g' | grep '"name"\:' | tr -d "name:" | tr -d -d \"", shell=True)

print HO

The error that is thrown at me when the latter is run

 File "./rb.py", line 10
    HO=subprocess.check_output("curl --silent -u username:password http://localhost:55672/api/queues | sed 's/,/\n/g' | grep '"name"\:' | tr -d "name:" | tr -d -d \"", shell=True)
                                                                                                                                     ^
SyntaxError: invalid syntax
[my_shell]bindo@test1:~/rbmq_test $

Please note that the command is working when it is run on the shell and generates an output in below format

line1
line2
line3

Please can someone help?

Upvotes: 1

Views: 5793

Answers (3)

GiovaniSalazar
GiovaniSalazar

Reputation: 2094

Probably is late , but this can be useful:

import subprocess

# cmd contains shell command
cmd="curl --silent -u username:passwordhttp://localhost:55672/api/queues | sed 's/,/\n/g' | grep '"name"\:' | tr -d "name:" | tr -d -d \""

process = subprocess.Popen(cmd,shell=True,stdin=None,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
# The output from your shell command
result=process.stdout.readlines()
if len(result) >= 1:
    for line in result:
        print(line.decode("utf-8"))

Upvotes: 1

dfranca
dfranca

Reputation: 5322

You are quoting around the "name" seems to be wrong.

You are closing the double quoted string, that's why you are getting an invalid syntax, nothing related to the command itself.

Try adding an escape character before the quotes around name.

subprocess.check_output("curl --silent -u username:passwordhttp://localhost:55672/api/queues | sed 's/,/\n/g' | grep \"name\":' | tr -d \"name:\" | tr -d -d \"", shell=True)

Or replacing the double quote with single ones, this way you don't conflict with the command string:

subprocess.check_output("curl --silent -u username:passwordhttp://localhost:55672/api/queues | sed 's/,/\n/g' | grep 'name':' | tr -d 'name:' | tr -d -d \"", shell=True)

Based on the command line you posted first it seems that you need the double quoted one in the grep, so you need to escape it:

subprocess.check_output("curl --silent -u username:passwordhttp://localhost:55672/api/queues | sed 's/,/\n/g' | grep '\"name\"':' | tr -d 'name:' | tr -d -d \"", shell=True)

Upvotes: 0

Hamuel
Hamuel

Reputation: 633

Look like the command have a lot of forbidden characters you need to escape maybe you can try the following

cmd = """
curl --silent -u username:password http://localhost:55672/api/queues | sed 's/,/\n/g' | grep '"name"\:' | tr -d "name:" | tr -d -d \"
"""
subprocess.check_output(cmd)

Upvotes: 0

Related Questions