触发了ValueError异常。 File " Exception.py", line 4, in main x = int('str') 而第7行调用了第4行的代码 File " Exception.py", line 7, in <module> if __name__ == '__main__': main() 对于异常的处理,在python中,我们可以使用try语句来进行捕获
Here is one more simple example which tries to open a file where you do not have permission to write in the file so it raises an exception: #!/usr/bin/python try: fh = open("testfile", "w") fh.write("This is my test file for exception handling!!") except IOError: print "Erro...
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. Note: Exceptions in theelseclause are not handled by ...
Exception Handling Best Practices 1. 具体异常优先 先捕获具体异常，再捕获通用异常 Catch specific exceptions before general ones 2. 避免空except块 3. 异常信息丰富 4. 日志记录异常 实用示例 Practical Examples 示例1：文件操作异常处理 Example 1: File Operation Exception Handling 示例2：输入验证 Example 2...
8.3. Handling Exceptions It is possible to write programs that handle selected exceptions. Look at the following example, which asks the user for input until a valid integer has been entered, but allows the user to interrupt the program (usingControl-Cor whatever the operating system supports);...
02 Handling Exceptions 处理异常情况 使用try except 方法来处理异常情况 defconvert(s):try:number=''fortokenins:number+=DIGIT_MAP[token]x=int(number)print(f"Conversion succeeded! x={x}")exceptKeyError:print("Conversion failed!")x=-1returnx ...
Python File Handling In our File Handling section you will learn how to open, read, write, and delete files. Python File Handling Python Database Handling In our database section you will learn how to access and work with MySQL and MongoDB databases: ...
【0基础小白python入门】文件处理(file handling)发布于 2021-10-17 07:39 · 972 次播放 赞同42 条评论 分享收藏喜欢 举报 Python文件管理文件Python 入门Python 开发Python教程 写下你的评论... 2 条评论 默认 最新 小蜻蜓 讲的很细致,很清楚,很容易理解。 2021-10-17 ...
File handling in Python is the process of reading and writing data to and from a file stored in a computer system.
We can use File handling to read and write data to and from the file.Opening a file # Before reading/writing you first need to open the file. Syntax …