What is the method for handling exceptions in Python?

2 years ago
Benjamin Taylor
1 minute

There are several ways to handle exceptions in Python.

  1. Using a try-except statement: you can place code that may throw an exception in a try block, then handle the exception in an except block. Multiple except blocks can be used to handle different types of exceptions, and a finally block can be used to execute code that must run regardless of whether an exception occurs.
try:
    # 可能抛出异常的代码
except ExceptionType:
    # 处理特定类型的异常
except:
    # 处理其他类型的异常
finally:
    # 无论是否发生异常都必须执行的代码
  1. With the raise statement, one can manually raise an exception by using the raise statement in the code to raise a specific type of exception and provide relevant error information when doing so.
if condition:
    raise ExceptionType("Error message")
  1. Using assert statement: You can use assert statement in your code to check if a certain condition is true, and if the condition is false, it will raise an AssertionError exception.
assert condition, "Error message"
  1. Utilize exception handling functions: You can use Python’s built-in exception handling functions to deal with specific types of errors.
try:
    # 可能抛出异常的代码
except ZeroDivisionError:
    # 处理除零异常
except ValueError:
    # 处理值错误异常
except FileNotFoundError:
    # 处理文件未找到异常

The above are common methods for handling outliers, the specific choice depends on the specific needs and circumstances.

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