A and B loops

import os

countX = 0
countA = 0
countB = 0

dirX = "Fisher"
listA = os.listdir(dirX)
countX += 1

for itemB in listA:
    pathC = dirX + "/" + itemB
    listD = os.listdir(pathC)
    countA += 1
    
    for itemE in listD:
        pathF = pathC + "/" + itemE
        itemG = open(pathF)
        countB += 1

        for fileH in itemG:
            outputI = len(fileH)


print()
print(dirX)
print(itemB)
print(itemE)
print(itemG)
print(outputI)

print()
print(" lines/items in --")
print("   --       Fisher =", countX)
print("   --    Fisher/.. =", countA)
print("   -- Fisher/../.. =", countB)
print()