python(如何计算通过考试的female人数)

堪错版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

堪错版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

最好是把一个逻辑层的放到一个块里面，比如上面的两个if,他们两个应该是同等级的.