python(如何計算通過考試的female人數)

堪錯版1：
total =0
gradeCounter =0
while 1:
    sex=raw_input("Enter sex")
    grade = raw_input("Enter grade,-1  to end:")
    grade=int (grade)
    if sex == "stop":break
    if sex=="F" and grade >=65:
        gradeCounter+=1
        total=total+1
print "gradeCounter:",gradeCounter
print "total:",total

堪錯版2：
total =0
gradeCounter =0
while 1:
    sex=raw_input("Enter sex")
    if sex == "stop":break
    grade = raw_input("Enter grade,-1  to end:")
    grade=int (grade)

    if sex=="F" and grade >=65:
        gradeCounter+=1
        total=total+1
print "gradeCounter:",gradeCounter
print "total:",total

最好是把一個邏輯層的放到一個塊裡面，比如上面的兩個if,他們兩個應該是同等級的.