class Research:
    def __init__(self, name, hour, machine, seq):
        self.name = name
        self.hour = hour
        self.machine = machine
        self.seq = seq

researchlist = []

filelist = []

import os
for root, dirs, files in os.walk("data"):
    for file in files:
        if file.endswith(".txt"):
            f = open(root+'\\'+file, 'r')
            lines = f.readlines() #список всех строк
            num_lines = len(lines)
            if num_lines > 51:
                filelist.append(root+'\\'+file)

for l in filelist:
    fi = open(l, 'r')
    for line in fi:
        array = line.split('\t')
        if array[0] != "ID": #пропустили первую строку с айди
            if not array[4].count(array[4][0]) == len(array[4]): #повторяющийся символ
                res = Research(array[1], array[2], array[3], array[4])
                researchlist.append(res)