NameError：未定义名称'A'？ [处于保留状态]

Question

您好，我一直很困惑，为什么我已经定义了名称A，但为什么如此？

def occurInBoth(A,B):
occured = 0 
  for i in range(len(A)):
    if B[i] == A[i]: 
        occured += 1

  return occured

occured = occurInBoth(A,B) 
A = [5,12,31,7,25]
B = [4,12,31,7,42,8]
print(occured)

Answer 1

尝试重新排序代码：

A = [5,12,31,7,25]
B = [4,12,31,7,42,8]
occured = occurInBoth(A,B)
print(occured)