如何始终在一行中打印更新后的变量

Question

我想每秒更新一次变量。我可以使用Thread通过time.sleep（1）做到这一点。我也想在表（from terminaltables import AsciiTable）中使用变量sys.stdout.write是无法实现的。如何每秒钟更新一次变量并打印

#-*-coding:utf-8-*-
import os, subprocess
from scapy import *
import time
import sys
import threading
import keyboard
from time import gmtime, strftime
import read_config as readConfig
import curses
from terminaltables import AsciiTable

# Available fields for nmcli
fields = ('NAME', 'SSID', 'SSID-HEX', 'BSSID', 'MODE', 'CHAN', 'SIGNAL', 'DEVICE', 'DBUS-PATH')

def nmcliGathering():
    cmd = ['nmcli -f NAME,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
    addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
    (out, err) = a

ddr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        name = out.replace('\'', '')

        cmd = ['nmcli -f SSID,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
        addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
        (out, err) = addr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        ssid = out.replace('\'', '')

        cmd = ['nmcli -f BSSID,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
        addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
        (out, err) = addr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        bssid = out.replace('\'', '')

        cmd = ['nmcli -f MODE,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
        addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
        (out, err) = addr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        mode = out.replace('\'', '')

        cmd = ['nmcli -f CHAN,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
        addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
        (out, err) = addr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        chan = out.replace('\'', '')

        cmd = ['nmcli -f SIGNAL,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
        addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
        (out, err) = addr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        signal = out.replace('\'', '')

        cmd = ['nmcli -f DEVICE,ACTIVE dev wifi list | awk \'$2 ~ /yes/ {print $1}\'']
        addr = subprocess.Popen(cmd, stdout = subprocess.PIPE, shell = True)
        (out, err) = addr.communicate()
        out = str(out)
        out = out.replace('b\'', '')
        out = out.replace('\\n', '')
        device = out.replace('\'', '')

        table_data = [['TIME', 'NAME', 'SSID', 'BSSID', 'MODE', 'CHAN', 'SIGNAL', 'DEVICE'],
        [strftime("%H:%M:%S", gmtime()), name, ssid, bssid, mode, chan, signal, device]]
        table = AsciiTable(table_data)

        print(table.table)

    if __name__ == '__main__':
        nmcliGathering()

更新：

我想做的一个简单例子

import sys, time
    i = 0
    while i < 5:
        sys.stdout.write('\r{0}'.format(i))
        sys.stdout.flush()
        i = i + 1
        time.sleep(1)

在我的代码中，我想像在示例代码中一样打印table.table