Advent of Code Day 7 Part 1

with open("input.txt") as readFile:
    lineLst = []
    for lines in readFile:
        lineLst.append(lines.strip())
readFile.close()

fileSystem = {}
for line in lineLst:
    if line.startswith('$'):
        if line.startswith('$ cd'):
            if line[5:] == '..':
                continue
            else:
                recentDir = line[5:]
                fileSystem[recentDir] = []
        else:
            continue
    else:
        if line.startswith('dir'):
            fileSystem[recentDir].append(line)
        else:
            fileSystem[recentDir].append(line.split(' ')[0])

sums = []
for key in fileSystem:
    while any(file.startswith('dir') for file in fileSystem[key]):
              for i,files in enumerate(fileSystem[key]):
                  if files.startswith('dir'):
                      fileSystem[key].extend(fileSystem[files[4:]])
                      fileSystem[key].pop(i)
    sums.append(sum(list(map(int,fileSystem[key]))))

sumsLess = []

for dirSums in sums:
    if dirSums <= 100000:
        sumsLess.append(dirSums)

print(sum(sumsLess))