Python except 关键字

Python Kudiya

实例

如果语句引发错误，则打印 "Something went wrong"：

try:
  x > 3
except:
  print("Something went wrong")

Rarraba Hanyan

定义和用法

在 try ... except 块中使用了关键字 except。它定义 try 块引发错误时要运行的代码块。

您可以为不同的错误类型定义不同的块，以及没有问题的情况下执行的块，请参见下面的例子。

More examples

Example 1

If NameError occurs, write a message, if TypeError occurs, write another message:

x = "hello"
try:
  x > 3
except NameError:
  print("You have a variable that is not defined.")
except TypeError:
  print("You are comparing values of different type")

Rarraba Hanyan

Example 2

Attempt to execute a statement that raises an error, but do not define the error type (in this case ZeroDivisionError):

try:
  x = 1/0
except NameError:
  print("You have a variable that is not defined.")
except TypeError:
  print("You are comparing values of different type")
except:
  print("Something else went wrong")

Rarraba Hanyan

Example 3

If no error occurs, write a message:

x = 1
try:
  x > 10
except NameError:
  print("You have a variable that is not defined.")
except TypeError:
  print("You are comparing values of different type")
else:
  print("The 'Try' code was executed without raising any errors!")

Rarraba Hanyan

Sayyari Yankuna

try Kudiya

finally Kudiya

Python Kudiya