normalize pager output

normalize.py

#!/usr/bin/python
import sys
import re

input_str = sys.stdin.read()
shell_pid = re.compile(r'vm_create\t\((\d+)').search(input_str).group(1)
shell_pid = shell_pid
pid_list = [shell_pid]

for match in re.finditer(r'vm_create\t\((\d+), (\d+)\)', input_str):
    pid_list.append(match.group(2))

sub = 0
input_str = input_str.replace(f'({pid_list[0]}, {pid_list[1]})', '(0, 1)')
for pid in pid_list:
    input_str = input_str.replace(f'({pid}', f'({sub}')
    input_str = input_str.replace(f'{pid})', f'{sub})')
    sub += 1

sys.stdout.write(input_str)