#!/usr/bin/env python3 def main(): x = int('str') print(x) if __name__ == '__main__': main() 运行结果为: Traceback (most recent call last): File " Exception.py", line 7, in <module> if __name__ == '__main__': main() File " Exception.py", line 4, in main ...
Finally Python提供了一个关键字finally,它总是在try和except块之后执行。finally块总是在try块正常终止后或try块由于某些异常终止后执行。 try:# Some Code...except:# optional block# Handling of exception (if required)else:# execute if no exceptionfinally:# Some code ...(always executed) Raising Exc...
以一个名为Exception.py的文件为例，以下是运行结果：Traceback (most recent call last): File "Exception.py", line 7, in if __name__ == '__main__': main() File "Exception.py", line 4, in main x = int('str') ValueError: invalid literal for int() with base 10: 'st...
print ("a/b result in 0") else: print (c) 1. 2. 3. 4. 5. 6. 7. Finally Python提供了一个关键字finally,它总是在try和except块之后执行。finally块总是在try块正常终止后或try块由于某些异常终止后执行。 try: # Some Code... except: # optional block # Handling of exception (if require...
File"<stdin>", line2, in<module>RuntimeError:You can't use a negative number>>> There are many kinds of exceptions that can be raised in addition to theRuntimeErrorshown above. See the Python reference manual for a list of all the available exception types and for how to create your...
File "<string>", line 7, in <module> reciprocal = 1/num ZeroDivisionError: division by zero Here, theassertstatement in the code checks thatnumis an even number; if num is odd, it raises anAssertionError, triggering the except block. ...
except FileNotFoundError: print("File not found") else: print("File read successfully") print(f"Length: {len(contents)} chars") Theelseblock runs only if no exceptions occur in thetryblock. This separates error handling from successful execution logic. ...
Hi, I'm using python wrapper of sitk for image registration. I'd like to test different combinations of image normalizations so that I test different registration methods within a loop and I'd prefer not failing fast getting one exceptio...
Enhance your Python exception handling skills through exercises. Learn how to handle ZeroDivisionError, ValueError, FileNotFoundError, TypeError, PermissionError, and IndexError exceptions with practical solutions.
从上贴【错误类型】的内容我们知道,Python 在程序报错时会返回详细信息,如错误发生的行数和具体的错误类型。 首先需要明白的是,我们无法完全阻止错误发生,但是可以提前预防以至于程序不会崩溃。这个提前预防的动作称为异常处理(exception handling)。 总之异常处理就是为了防患于未然。