python汉诺塔问题求解

Question

问题遇到的现象和发生背景

递归-汉诺塔，

用代码块功能插入代码，请勿粘贴截图

def Hanoi(n, A, C, B):

global count
if n==1:
      count=count +1
      print ('%d:\t%s ---> %s'%(count,A,C))
  
else:
    Hanoi(n-1 ,A,B,C)
    Hanoi(1,A,C,B)
    Hanoi(n-1,B,C,A)

if(name == "main"):

plate_nums = int(input('请输入A柱子上的圆盘个数：'))
Hanoi(plate_nums,'A','C','B')

运行结果及报错内容

Traceback (most recent call last):
File "src/step3/hanoi.py", line 16, in
Hanoi(plate_nums,'A','C','B')
File "src/step3/hanoi.py", line 10, in Hanoi
Hanoi(n-1 ,A,B,C)
File "src/step3/hanoi.py", line 10, in Hanoi
Hanoi(n-1 ,A,B,C)
File "src/step3/hanoi.py", line 10, in Hanoi
Hanoi(n-1 ,A,B,C)
File "src/step3/hanoi.py", line 6, in Hanoi
count=count +1
NameError: name 'count' is not defined

Answer 1

count确实未定义啊，你至少在外面给count赋个初始值吧