Try, Except, else and Finally in PythonAdditionally, have an else clause, which is executed if no exceptions are raised during the file operations. In this case, you can print a message indicating that the file was opened successfully. Also have a finally clause, which is always executed ...
Python Try, Except, Else and Finally Block Thefinallyclause can appear always after theelseclause. It does not change the behavior of the try/except block itself, however, the code under finally will be executed in all situations, regardless of if an exception occurred and it was handled, or...
下面是一个更加复杂的例子(在同一个 try 语句里包含 except 和 finally 子句): >>>def divide(x, y): try: result = x / y except ZeroDivisionError: print("division by zero!") else: print("result is", result) finally: print("executing finally clause") >>> divide(2, 1) result is 2.0...
# Program to depict else clause with try-except# Python 3# Function which returns a/bdefAbyB(a,b):try:c=((a+b)/(a-b))exceptZeroDivisionError:print("a/b result in 0")else:print(c)# Driver program to test above functionAbyB(2.0,3.0)AbyB(3.0,3.0) 输出 -5.0a/bresultin0 Python...
You should be careful about using the finally block, as it is not the same thing as using an else block in the try, except.您应该谨慎使用finally块,因为它与try中使用else块的功能不同,除了。The finally block will be run regardless of the outcome of the try except.无论try的结果如何,都将...
finally_clause.py try: file = open("report.txt", "w") file.write("Sample data") 100 / 0 except ZeroDivisionError: print("Division error occurred") finally: file.close() print("File resource closed") Thefinallyblock ensures the file is closed even after a division error interrupts the wr...
Syntax for a try-except block withfinallyandelseclauses: # Syntax with finally & else blockstry:# some code that may raise an exceptionexceptExceptionType:# code to handle the exceptionelse:# code to run if no exception is raisedfinally:# code to run regardless of whether an exception is ...
finally当try通过break,continue或return语句留下语句的 任何其他子句时,该子句也“跳出时”执行。 >>>defdivide(x, y):...try:...result = x / y...exceptZeroDivisionError:...print("division by zero!")...else:...print("result is", result)...finally:...print("executing finally clause") ...
Python Exception Handling Best Practices Always try to handle the exception in the code to avoid abnormal termination of the program. When creating a custom exception class, suffix its name with “Error”. If the except clauses have the same code, try to catch multiple exceptions in a single...
Effective Python 读书笔记 Item 13 Take Advantage of Each Block in try/except/else/finally,程序员大本营,技术文章内容聚合第一站。