Joss Nix

import os

folder_paths = ['./']
dst_file1 = '1.xls'
dst_file2 = '2.xls'

for itemFolder in folder_paths:
    listFiles = os.listdir(itemFolder)
    for itemFiles in listFiles:
        if (itemFiles[-4:] == '.xls'):
            size_file = os.stat(itemFolder+'/'+itemFiles).st_size/1024
            if (size_file > 200):
                os.rename(itemFolder+'/'+itemFiles, itemFolder+'/'+dst_file1) 
            else:
                os.rename(itemFolder+'/'+itemFiles, itemFolder+'/'+dst_file2)

openedFile = ['aaa', 'bbb', 'ccc', 'xxx']

for index, line in enumerate(openedFile):
        if 'c' in line:
            if (openedFile[index-1]):
                print(openedFile[index-1])

with open(logfile, 'r', encoding='utf-8') as log:
    tmpLog = log.readlines()
    for index, line in enumerate(tmpLog)):
        if 'Domain not found' in line:
            if (tmpLog[index-1]):
                ...