Question

大家好我是python的新手。这是我的代码。我能够捕获Zero错误但不能捕获Name错误。我使用的是Python 3.

import re 

while True:
  try:
       print("Lets Solve the equation (x/2)/(x-y):")
       print('Please enter 0 to exit')

       x= float(input('Enter the value of x:'))
       y= float(input('Enter teh value of y:'))

       if x==0 or y==0:
          break


       z = (x/2) / (x-y)


  except ZeroDivisionError as e:
       print('There was an error, try again ?') 
       print('You keyed a vlue that caused a division by 0 :') 


  except NameError as e:
       print('There was an error, try again ?') 
       print('you entered a txt where a number was expected') 

  except Exception as e:
       print('There was an error, try again ?') 
       print('Error mesage:',str(e))         


  else:
        print('solving (x/2) / (x-y) for vaule of x=', \
             x, 'and y:', y, 'we get the result:', z)

Answer 1

对无法转换为浮点数的字符串调用float()会导致ValueError，而不是NameError。只需将第二个except子句更改为except ValueError as e:。

Python名称异常名称错误不起作用，无法捕获名称错误

1 个答案: