Receiving this error in my "response" and causes script to return wrong status

[snippsat]

readlines() splits it into separate lines,but also add new line \n.
Change to this.

with open("ip_list.txt") as file:
    park = [ip.strip() for ip in file]

Or in your first post you try to scan a folder for ip_list text files,then it can be done something like this.

import time
import subprocess
from concurrent.futures import ThreadPoolExecutor
import pandas as pd
import os

def ping(ip):
    return (
        ip,
        subprocess.run(
            f"ping {ip} -n 1", stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL
        ).returncode,
    )
start = time.time()

def scan_files():
    directory = '.'
    for entry in os.scandir(directory):
        if entry.is_file() and entry.name.endswith('.txt'):
            if 'ip_list' in entry.name:
                pt = directory + '/' + entry.name
                with open(pt) as file:
                    for ip in file:
                        yield ip.strip()

executor = ThreadPoolExecutor(5)
df = pd.DataFrame(executor.map(ping, list(scan_files())))
df.to_csv(r'ip_output.csv',header=False, index=False, quoting=None)
print(df)