How to clear stdout in Python subprocess?

Ping is producing many more lines than you're reading due to the 2 second timeout between reads. I'd move the os. Kill call into another thread, and use the main thread to read every line from proc.

Stdout : import sys, os import subprocess import threading import signal import time #Use ctrl-c and ctrl-break to terminate the script/ping def sigbreak(signum, frame): import sys if proc.poll() is None: print('Killing ping...') proc.kill() sys. Exit(0) signal. Signal(signal.

SIGBREAK, sigbreak) signal. Signal(signal. SIGINT, sigbreak) #executes in a separate thread def run(pid): while True: time.

Sleep(2) try: os. Kill(pid, signal. CTRL_BREAK_EVENT) except WindowsError: #quit the thread if ping is dead break cmd = r'c:\windows\system32\ping.

Exe', '127.0.0.1', '-l', '10000', '-t' flags = subprocess. CREATE_NEW_PROCESS_GROUP proc = subprocess. Popen(cmd, stdout=subprocess.

PIPE, creationflags=flags) threading. Thread(target=run, args=(proc. Pid,)).start() while True: line = proc.stdout.readline() if b'statistics' in line: #I don't know what you're doing with the ping stats.

#I'll just print them. For n in range(4): encoding = getattr(sys. Stdout, 'encoding', 'ascii') print(line.

Decode(encoding).rstrip()) line = proc.stdout.readline() print().

Ping is producing many more lines than you're reading due to the 2 second timeout between reads. I'd move the os. Kill call into another thread, and use the main thread to read every line from proc.

Stdout: import sys, os import subprocess import threading import signal import time #Use ctrl-c and ctrl-break to terminate the script/ping def sigbreak(signum, frame): import sys if proc.poll() is None: print('Killing ping...') proc.kill() sys. Exit(0) signal. Signal(signal.

SIGBREAK, sigbreak) signal. Signal(signal. SIGINT, sigbreak) #executes in a separate thread def run(pid): while True: time.

Sleep(2) try: os. Kill(pid, signal. CTRL_BREAK_EVENT) except WindowsError: #quit the thread if ping is dead break cmd = r'c:\windows\system32\ping.

Exe', '127.0.0.1', '-l', '10000', '-t' flags = subprocess. CREATE_NEW_PROCESS_GROUP proc = subprocess. Popen(cmd, stdout=subprocess.

PIPE, creationflags=flags) threading. Thread(target=run, args=(proc. Pid,)).start() while True: line = proc.stdout.readline() if b'statistics' in line: #I don't know what you're doing with the ping stats.

#I'll just print them. For n in range(4): encoding = getattr(sys. Stdout, 'encoding', 'ascii') print(line.

Decode(encoding).rstrip()) line = proc.stdout.readline() print().

Try ping. Py instead of juggling with the ping.exe.

No package size option – user478514 Sep 1 at 10:52.

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