QT Файлы ---> Файлы в файле

def tobytes(k, f):
    if f == 'B':
        return int(k)
    if f == 'KB':
        return int(k) * 1024
    if f == 'MB':
        return int(k) * 1024 * 1024
    if f == 'GB':
        return int(k) * 1024 * 1024 * 1024
    if f == 'TB':
        return int(k) * 1024 * 1024 * 1024 * 1024


def st(x):
    return x[0]


def tomax(x):
    frs = ['B', 'KB', 'MB', 'GB', 'TB']
    k = 0
    t = x
    while t >= 1024:
        t = t / 1024
        k += 1
    if frs[k] == 'TB':
        t = t * 1024
        k -= 1
    return str(round(t)) + ' ' + frs[k]


f = open('input.txt', 'r', encoding='utf-8')
s = []
ty = []
sz = []
for i in f:
    s.append(i.strip('\n').split(' '))
f.close()
for i in range(len(s)):
    fr = s[i][0].split('.')[1]
    if fr not in ty:
        sz.append(0)
        ty.append(fr)
ty.sort()
for i in range(len(s)):
    fr = s[i][0].split('.')[1]
    sz[ty.index(fr)] = sz[ty.index(fr)] + tobytes(s[i][1], s[i][2])
s.sort(key=st)
f = open('output.txt', 'w', encoding='utf-8')
for i in range(len(ty)):
    for ii in range(len(s)):
        if s[ii][0].split('.')[1] == ty[i]:
            f.write(s[ii][0] + '\n')
    f.write('----------\n')
    f.write('Summary: ' + tomax(sz[i]) + '\n\n')
f.close()