import traceback print("1/0 Exception Info") try: 1/0 except Exception as e: print('str(Exception):\t', str(Exception)) print('str(e):\t\t', str(e)) print('repr(e):\t', repr(e)) exc_type, exc_value, exc_traceback = sys.exc_info() print('e.message:\t', exc_value)...
readerRef="Please refer to the %s document:\n https://github.com/alibaba/DataX/blob/master/%s/doc/%s.md \n"%(reader,reader,reader) writerRef="Please refer to the %s document:\n https://github.com/alibaba/DataX/blob/master/%s/doc/%s.md \n"%(writer,writer,writer) print(readerRef)...
接受可变参数 **kwargs,接受可变关键字参数 """ print(args) print(kwargs) ''' 函数的定义规范~通常先有位置参数,后面是关键字参数 ''' # 0个参数 test() # 1个位置参数 test("name") # 2个位置参数 test("tom", "jerry") # 1个位置参数,1个关键字参数 test("tom", friend...
def main(args): # 主逻辑print(f"Hello{args.name}") ifname== 'main': parser = argparse.ArgumentParser() parser.add_argument("--name", default="World") args = parser.parse_args() main(args) 四、与其他语言的对比启示 语言main函数特点 哲学差异 C 单一入口点 过程式编程 Java public static...
print(f"{prefix}线程 {name} 执行完成") def main(): # 创建线程实例,通过 kwargs 传递关键字参数 thread = threading.Thread( target=worker, args=("线程-1", 1, 3), # 位置参数(可选) kwargs={"prefix": "[LOG] "} # 关键字参数 ...
print("主线程结束") if __name__ == "__main__": main() 输出 线程 线程-1 开始执行 线程 线程-1 执行完成 主线程结束 2. 传递多个参数 如果目标函数需要多个参数,只需在 args 元组中按顺序提供所有参数。 示例代码 python import threading ...
importarcpyimportsystry:# Execute the Buffer toolarcpy.Buffer_analysis("c:/transport/roads.shp","c:/transport/roads_buffer.shp")exceptException: e = sys.exc_info()[1] print(e.args[0])# If using this code within a script tool, AddError can be used to return messages# back to a scri...
example, the error is detected at the keyword :keyword:`print`, since a colon (``':'``) is missing before it. File name and line number are printed so you know where to look in case the input came from a script. 解析器会重复出错的行,并在行中最早发现的错误位置上显示一个小“箭头...
>>> message = 'Please wait while the program is loading...' >>> print(message) Lastly, you could pass an expression, like string concatenation, to be evaluated before printing the result: Python >>> import os >>> print('Hello, ' + os.getlogin() + '! How are you?') Hello,...
Example: Exception Handling Using try...except try: numerator =10denominator =0result = numerator/denominatorprint(result)except:print("Error: Denominator cannot be 0.")# Output: Error: Denominator cannot be 0. Run Code In the example, we are trying to divide a number by0. Here, this code...