How to find out CPU usage and memory consumption for a particular process? [CLOSED]

Question

I have to write a python script which has to give CPU usage for particular process.
Ex: Lets say i have a process ABC which is running continuously for 10 hours.(Process may have 'n' number of threads.)
So,
1st) My script should have to check the CPU usage and Memory consumption for process ABC, and also for threads of it after every 5 seconds.

2nd) Script has to take an average of CPU usage and memory consumption and it has to print final result.

i have tried using this command ,

top -bn1 | grep "Cpu(s)" | \
           sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | \
           awk '{print 100 - $1"%"}'

Can anyone help in find out?

Comments

Assume you know the pid of the process then
ps -p <pid> -o %cpu,%mem

To get the PID of the process
ps aux | grep -i <process name> | awk {'print $2'}

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Thank you sir

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Sir, I have checked above command it is working properly.
but What if -p option is not available?
I have another board which is busybox (broadcom). where it is saying that "-p" option is not available.

As of now i am doing with "top -bn1" command and then parsing the string to get CPU% and MEM consumption
Is there any other option?

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Try top -p <PID>

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Yes, it seems right with other system, but in one of the board(BusyBox) -p is not available.

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seems your system does not have -p option, try "top | grep <Process Name>" ....

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Yes, its working perfectly.
Thank you