...# but may be overriddeninexception subclasses...x,y=inst.args # unpack args...print('x =',x)...print('y =',y)...<class'Exception'>('spam
In this article we’ll be looking at printing just theStackTracefrom the error message of an exception. We’ll see how to print it to the output screen and how to save it to a file. We will also see how to customize the message further for maximum efficiency. Without further ado, let...
从异常类的继承层次可见,BaseException的子类很多,其中 Exception 是非系统退出的异常,它包含了很多常用异常。如果自定义异常需要继承Exception 【提示】从异常类继承的层次可见,Python 中的异常类命名主要是后缀有 Exception、Error 和 Warning,也有少数几个没有采用这几个后缀命名的,当然这些后缀命名的类都有它的含义。...
) except InvalidEmailException as ex: print(f"Error: {ex.message}")第五行super().__init__(self.message) 调用基类 Exception 的构造函数来初始化 self.message。Exception的构造函数:class Exception(BaseException):def __init__(self, *args: object) -> None: """...
BufferError BytesWarning DeprecationWarning EnvironmentError EOFError Exception FloatingPointError FutureWarning GeneratorExit ImportError ImportWarning IndentationError IndexError IOError KeyboardInterrupt KeyError LookupError MemoryError NameError NotImplementedError ...
An Example of Exception Handling Here’s a code snippet that shows the main exceptions that you’ll want to handle when using subprocess: Python import subprocess try: subprocess.run( ["python", "timer.py", "5"], timeout=10, check=True ) except FileNotFoundError as exc: print(f"...
logging.basicConfig(level=log_level, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')logger = logging.getLogger(__name__)("Log level info")logger.debug("Log level debug")logger.warning("Log level warning")# 捕获异常,并打印出出错行数try: raise Exception("my exception...
EXEC sp_execute_external_script @language = N'R', @script = N' print(normalizePath(R.home())); print(.libPaths());'; 示例结果 STDOUT message(s) from external script: [1] "C:\Program Files\Microsoft SQL Server\MSSQL13.SQL2016\R_SERVICES" ...
()smtpObj.connect(mail_host,25)smtpObj.login(mail_user,mail_pass)smtpObj.sendmail(sender,receivers,message.as_string())print("邮件发送成功")exceptsmtplib.SMTPExceptionase:print("Error: 无法发送邮件",e)if__name__=='__main__':subject="邮件标题"to_lsit="接收方邮箱"content=""" # 邮件...
file_path = 'pi_digits.txt' with open(file_path) as file_object: for line in file_object: print(line) 3.1415926535 8979323846 2643383279 可以看到打印的结果中,空白行变多了,这是因为在文件中每行的末尾都有一个看不见的换行符,因此每行打印的结果都会多出一个空行。同样,可以使用rstrip()方法删除...