with open('tabs.txt', 'w') as o:
    s = '\n'.join(['\t'.join(map(str, list(range(i, i + 10)))) for i in [0, 10, 
        20, 30]])
print(s, file=o)
with open('tabs.txt', 'r') as f:
    LoL = [x.strip().split('\t') for x in f]
LoL
LoL[2][3]
разбор файла, разделенного табуляцией, в Python