traceback.print_stack(file=sys.stdout)找程序流程

最新推荐文章于 2024-02-06 00:00:00 发布
原创 最新推荐文章于 2024-02-06 00:00:00 发布 · 1k 阅读 · 0 ·
CC 4.0 BY-SA版权
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文介绍了一个具体的调试场景，展示了如何通过打印堆栈跟踪和详细记录输入缓冲区内容来定位问题。这种方法有助于理解程序运行时的状态，并能有效地进行错误排查。

def do_event_in(self, buf):
        traceback.print_stack(file=sys.stdout)
        s =  traceback.extract_stack()
        print '%s Invoked me!'%s[-2][2]
        log_debug('server in %s' % buf)
        buf.clear()
        self.push()
        return 0

 File "./tcp_server.py", line 139, in <module>
    unit.start()
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/poller_timer_unit.py", line 23, in start
    CPollerUnit.process_poller_events(self)
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/poller.py", line 207, in process_poller_events
    if epoll_object.input_notify() >= 0:
  File "./tcp_server.py", line 95, in input_notify
    ret = server_conn_object.init(server_conn, self)
  File "./tcp_server.py", line 29, in init
    return self.push()
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/tcp_base_connect.py", line 42, in push
    if self._conn is None: ret = self.create_conn()
  File "./tcp_server.py", line 38, in create_conn
    if not self.b_use_oob(): self.input_notify()
  File "./tcp_server.py", line 42, in input_notify
    return CTcpBaseConnect.input_notify(self)
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/tcp_base_connect.py", line 143, in input_notify
    return self.do_event_in()
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/tcp_base_connect.py", line 121, in do_event_in
    ret = self.handle_event_in()
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/tcp_base_connect.py", line 111, in handle_event_in
    ret = self._handle.do_event_in(self._in_buf)
  File "/data/dreamliang/mySvn/sdn_proj/branches/oss/common/tcp_handle.py", line 136, in do_event_in
    traceback.print_stack(file=sys.stdout)
handle_event_in Invoked me!

python：traceback —— 打印或读取堆栈的跟踪信息
实战大师
03-13 2036
python：traceback —— 打印或读取堆栈的跟踪信息
Python 内建函数 - print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False)
03-21 2081
Manual 直译 实例 拓展阅读ManualPrint objects to the text stream file, separated by sep and followed by end. sep, end and file, if present, must be given as keyword arguments.All non-keyword arguments are conve
traceback.print_stack(file=sys.stdout)与traceback.extract_stack()
tycoon的专栏
08-28 1498
def get_cur_info():     """     print sys._getframe().f_code.co_filename #当前文件名，可以通过__file__获得     print sys._getframe(0).f_code.co_name   #当前函数名     print sys._getframe(1).f_code.co_name     #调用
python堆栈跟踪_traceback
weixin_39716921的博客
11-24 436
traceback --- 打印或检索堆栈回溯¶该模块提供了一个标准接口来提取、格式化和打印 Python 程序的堆栈跟踪结果。它完全模仿Python 解释器在打印堆栈跟踪结果时的行为。当您想要在程序控制下打印堆栈跟踪结果时，例如在“封装”解释器时，这是非常有用的。这个模块使用 traceback 对象 —— 这是存储在 sys.last_traceback 中的对象类型变量，并作为 sys.ex...
python traceback print_python：traceback.print_stack（）：如何为输出着色和重新格式化...
weixin_39552037的博客
12-21 335
frompygmentsimporthighlightfrompygments.lexersimportPython3TracebackLexerfrompygments.formattersimportTerminalTrueColorFormattererr_str='''File ".venv/lib/python3.7/site-packages/django/db/models/quer...
Python中的traceback的基本用法（异常处理）
热门推荐
YFater的博客
08-26 9万+
文章目录一.Traceback介绍二.Traceback中的相关函数1.traceback.print_exc 一.Traceback介绍 在日常开发中，我们会做一些基本的异常处理，但是有时候只能打印我们处理的结果或者将异常打印出来，不能直观的知道在哪个文件中的哪一行出错。 def func(num1, num2): try: x = num1 * num2 y = num1 / num2 return x, y except Exceptio
Traceback (most recent call last): File "/data/zihao.zhang/DM_ICC/CDDM/main.py", line 5, in <module> File "/data/zihao.zhang/DM_ICC/CDDM/Diffusion/__init__.py", line 3, in <module> from .Diffusion import * File "/data/zihao.zhang/DM_ICC/CDDM/Diffusion/Diffusion.py", line 3, in <module> import torch File "/opt/conda/lib/python3.8/site-packages/torch/__init__.py", line 537, in <module> _C._initExtension(manager_path()) File "/opt/conda/lib/python3.8/site-packages/torch/cuda/__init__.py", line 123, in <module> _lazy_call(_check_capability) File "/opt/conda/lib/python3.8/site-packages/torch/cuda/__init__.py", line 121, in _lazy_call _queued_calls.append((callable, traceback.format_stack())) File "/opt/conda/lib/python3.8/traceback.py", line 197, in format_stack return format_list(extract_stack(f, limit=limit)) File "/opt/conda/lib/python3.8/traceback.py", line 211, in extract_stack stack = StackSummary.extract(walk_stack(f), limit=limit) File "/opt/conda/lib/python3.8/traceback.py", line 366, in extract f.line File "/opt/conda/lib/python3.8/traceback.py", line 288, in line self._line = linecache.getline(self.filename, self.lineno).strip() File "/opt/conda/lib/python3.8/linecache.py", line 16, in getline lines = getlines(filename, module_globals) File "/opt/conda/lib/python3.8/linecache.py", line 47, in getlines return updatecache(filename, module_globals) File "/opt/conda/lib/python3.8/linecache.py", line 137, in updatecache lines = fp.readlines() File "/opt/conda/lib/python3.8/codecs.py", line 322, in decode (result, consumed) = self._buffer_decode(data, self.errors, final) UnicodeDecodeError: 'utf-8' codec can't decode bytes in position 294-295: invalid continuation byte
最新发布
09-05
sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8') ``` 5. **使用二进制模式重新安装（如果安装包有问题）**： 有时候下载的安装包可能损坏，可以尝试重新下载对应的wheel文件，并使用二...
将下列代码报错的日志进行保存ef get_image(): try: # 清理上传目录中的JPEG文件 for filename in os.listdir(uploads_path): if filename.endswith('.jpg'): file_path = os.path.join(uploads_path, filename) os.remove(file_path) # 简化删除逻辑，异常将被外层捕获 # 重置全局状态 global RESET_TIME RESET_TIME = True # 获取并验证JSON数据 json_data = request.get_json() if not json_data or 'data' not in json_data or 'data' not in json_data['data']: logging.error("无效的JSON格式：缺少'data.data'字段") raise ValueError("无效的JSON格式：缺少'data.data'字段") up_file = json_data["data"]["data"] saved_images = [] # 处理每个上传的图像 for image_id, value in up_file.items(): # 安全过滤图像ID，只保留字母数字和部分安全字符 safe_id = ''.join(e for e in image_id if e.isalnum() or e in ['_', '-']) if not safe_id: logging.error(f"Invalid image ID: {image_id}") raise ValueError(f"Invalid image ID: {image_id}") up_filename = safe_id + ".jpg" save_file = os.path.join(uploads_path, up_filename) # 解码Base64数据 try: image_data = base64.b64decode(value) except (base64.binascii.Error, TypeError) as e: logging.error(f"ID为{safe_id}的图像数据解码失败: {str(e)}") raise ValueError(f"ID为{safe_id}的图像数据解码失败: {str(e)}") # 打开并验证图像 try: image = Image.open(BytesIO(image_data)) image.verify() # 验证图像完整性 image = Image.open(BytesIO(image_data)) # 验证后重新打开 except UnidentifiedImageError as e: logging.error(f"图像破损 ID {safe_id}: {str(e)}") raise ValueError(f"图像破损 ID {safe_id}: {str(e)}") except Exception as e: logging.error(f"Failed to process image ID {safe_id}: {str(e)}") raise ValueError(f"Failed to process image ID {safe_id}: {str(e)}") # 保存图像 try: image.save(save_file) except Exception as e: logging.error(f"Failed to save image ID {safe_id} to {save_file}: {str(e)}") raise ValueError(f"Failed to save image ID {safe_id} to {save_file}: {str(e)}") saved_images.append((safe_id, save_file)) # 检查是否有成功保存的图像 if not saved_images: logging.error("没有图像被成功处理") raise ValueError("没有图像被成功处理") return saved_images[-1][0], saved_images[-1][1] except Exception as e: logging.error(f'Critical error in get_image: {str(e)}') # 可以在这里添加更多的错误日志记录 print(f'Critical error in get_image: {str(e)}') raise # 重新抛出异常，让调用者处理 @app.route("/api/YuHangAI/picture/v2.0/",methods=['GET','POST']) def interface_usage(): message = """<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>北京御航智能</title> </head> <body> <h1>北京御航智能图像智能识别服务接口</h1> <p>提供多种场景下的图像识别</p> </body> </html>""" return message # 输电识别模型, 无人机巡检场景 @app.route("/api/YuHangAI/picture/v2.0/transmission",methods=['POST']) def detect_transmission_image(): logger.info("输电缺陷识别") start_time = time.time() json_data = request.get_json() try: _type = json_data["type"] except: _type = False image_id, save_file = get_image() time_1 = time.time() logger.info(f"处理数据用时{time_1-start_time}s") print(f"处理数据用时",file = sys.stderr) if save_file is None: logging.error('不支持的图像类型！') return jsonify("不支持的图像类型！") try: if _type == "wrjwyy": out_json = {"results":[]} out_json["data"]=preprocessing(save_file) else: out_json = {'image_id':image_id} objects = pool.apply_async(func=detect_transmission_models,args=(save_file,)).get() # result = pool.apply_async(func=detect_transmission_models, args=(save_file,)) # objects = result.get(timeout=30) count = 0 if len(objects) > 0: for key, values in objects.items(): if _type == "wrjwyy": if key in name_map: for value in values: if value[4] > 0.7: value.append(name_map[key]) out_json["results"].append({"result":value}) else: for value in values: if value[4] < 0.7: continue value.append(key) out_json[str(count)] = {"result":value} count += 1 except torch.cuda.OutOfMemoryError: logging.error("CUDA内存不足错误") out_json['status'] = '检测任务失败：GPU内存不足' except FileNotFoundError: logging.error(f"文件不存在: {save_file}") out_json['status'] = '检测任务失败：文件不存在' except Exception as e: import traceback logging.error(traceback.format_exc()) out_json['status'] = '检测任务失败！'+str(e) logging.error('检测任务失败！'+str(e)) time_2 = time.time() logger.info(f"检测图片用时{time_2-time_1}s") # print(f'检测图片用时{time_2-time_1}s',file = stdout) try: os.remove(save_file) except Exception as e: # logger.info('Failed to delete %s. Reason: %s' % (save_file, e)) print('Failed to delete %s. Reason: %s' % (save_file, e)) return jsonify(out_json)
08-07
它会在错误日志中自动捕获并输出异常的堆栈跟踪（stack trace），方便调试和问题追踪。这相当于 `logging.error(exc_info=True)`，其中 `exc_info=True` 表示包含完整的异常详情[^1]。下面我将逐步解释如何配置和...
Exception in Tkinter callback Traceback (most recent call last): File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 330, in find_cookie line_string = line.decode('utf-8') UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc8 in position 25: invalid continuation byte During handling of the above exception, another exception occurred: Traceback (most recent call last): File "_pydevd_bundle/pydevd_cython.pyx", line 532, in _pydevd_bundle.pydevd_cython.PyDBFrame._handle_exception File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 16, in getline lines = getlines(filename, module_globals) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 47, in getlines return updatecache(filename, module_globals) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 136, in updatecache with tokenize.open(fullname) as fp: File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 394, in open encoding, lines = detect_encoding(buffer.readline) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 381, in detect_encoding encoding = find_cookie(second) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 335, in find_cookie raise SyntaxError(msg) SyntaxError: invalid or missing encoding declaration for 'D:\\project\\desktop_jijun\\desktop_jijun\\desktop_jijun.py' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 330, in find_cookie line_string = line.decode('utf-8') UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc8 in position 25: invalid continuation byte During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1883, in __call__ return self.func(*args) File "D:\project\desktop_jijun\desktop_jijun\desktop_jijun.py", line 169, in consaltant content = response.content.decode('gbk') File "_pydevd_bundle/pydevd_cython.pyx", line 1366, in _pydevd_bundle.pydevd_cython.SafeCallWrapper.__call__ File "_pydevd_bundle/pydevd_cython.pyx", line 322, in _pydevd_bundle.pydevd_cython.PyDBFrame.trace_exception File "_pydevd_bundle/pydevd_cython.pyx", line 452, in _pydevd_bundle.pydevd_cython.PyDBFrame.handle_user_exception File "_pydevd_bundle/pydevd_cython.pyx", line 535, in _pydevd_bundle.pydevd_cython.PyDBFrame._handle_exception File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 16, in getline lines = getlines(filename, module_globals) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 47, in getlines return updatecache(filename, module_globals) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 136, in updatecache with tokenize.open(fullname) as fp: File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 394, in open encoding, lines = detect_encoding(buffer.readline) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 381, in detect_encoding encoding = find_cookie(second) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 335, in find_cookie raise SyntaxError(msg) SyntaxError: invalid or missing encoding declaration for 'D:\\project\\desktop_jijun\\desktop_jijun\\desktop_jijun.py' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 330, in find_cookie line_string = line.decode('utf-8') UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc8 in position 25: invalid continuation byte During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 194, in _run_module_as_main return _run_code(code, main_globals, None, File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 87, in _run_code exec(code, run_globals) File "d:\vs\benti\common7\ide\extensions\microsoft\python\core\debugpy\__main__.py", line 45, in <module> cli.main() File "d:\vs\benti\common7\ide\extensions\microsoft\python\core\debugpy/..\debugpy\server\cli.py", line 444, in main run() File "d:\vs\benti\common7\ide\extensions\microsoft\python\core\debugpy/..\debugpy\server\cli.py", line 285, in run_file runpy.run_path(target_as_str, run_name=compat.force_str("__main__")) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 265, in run_path return _run_module_code(code, init_globals, run_name, File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 97, in _run_module_code _run_code(code, mod_globals, init_globals, File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 87, in _run_code exec(code, run_globals) File "D:\project\desktop_jijun\desktop_jijun\desktop_jijun.py", line 197, in <module> root.mainloop() File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1420, in mainloop self.tk.mainloop(n) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1887, in __call__ self.widget._report_exception() File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1603, in _report_exception root.report_callback_exception(exc, val, tb) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 2341, in report_callback_exception traceback.print_exception(exc, val, tb) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\traceback.py", line 103, in print_exception for line in TracebackException( File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\traceback.py", line 509, in __init__ self.stack = StackSummary.extract( File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\traceback.py", line 366, in extract f.line File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\traceback.py", line 288, in line self._line = linecache.getline(self.filename, self.lineno).strip() File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 16, in getline lines = getlines(filename, module_globals) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 47, in getlines return updatecache(filename, module_globals) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\linecache.py", line 136, in updatecache with tokenize.open(fullname) as fp: File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 394, in open encoding, lines = detect_encoding(buffer.readline) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 381, in detect_encoding encoding = find_cookie(second) File "C:\Users\lry20\AppData\Local\Programs\Python\Python38\lib\tokenize.py", line 335, in find_cookie raise SyntaxError(msg) SyntaxError: invalid or missing encoding declaration for 'D:\\project\\desktop_jijun\\desktop_jijun\\desktop_jijun.py' a Press any key t
06-20
###三、系统级编码设置（可选）如果你的程序主要在Windows上运行，并且控制台输出中文乱码，可以设置标准流的编码：```pythonimportsysimportioifsys.platform=="win32":sys.stdout=io.TextIOWrapper(sys.stdout....
python print sys.stdout
Claroja
12-21 260
print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False) print默认写入的是标准输出,既控制台 sys.stdout.write('hello' + '\n') print('hello')
python3 中print函数参数详解，print(*values, sep=' ', end='\n', file=sys.stdout, flush=False)中参数介绍
phantom_dapeng的博客
08-31 2万+
Python3.x 编程初学者都是从输出Hello Word开始，在Python中通过print(“*”)实现，但我们对他知道多少呢？ 今天我就对print做一个较为详细的说明： print()函数的参数如下：print(*values, sep=' ', end='\t', file=sys.stdout, flush=False)1 *values : 表示要打印的值
打印调用栈的函数print_stack_trace
唐武的博客
10-10 1285
打印调用栈的函数print_stack_trace     /* * 打印调用栈的信息 * @param string $msg * 需要打印出来的消息 * @param function $log_handler * 处理日志的函数，如果为null，则调用print函数打印日志 * @param string $endline * 行结束符，如...
sys.stdout和print的区别
Fan9_的博客
06-25 2万+
一 sys.stdout的形式就是print的一种默认输出格式，等于print "%VALUE%" print函数是对sys.stdout的高级封装，看下print函数的解释 Prints the values to a stream, or to sys.stdout by default. Optional keyword arguments: file: a file...
文件读写sys.stdout,sys.stderr和open()函数获得运行状况
qq_42766639的博客
05-31 1193
1.sys.stdout stdout用于print和状态表达式的结果输出，及input（）的瞬时输出 sys.stdout的形式就是print的一种默认输出格式 import os sys.stdout.write("hello world" + "\n") print("hello world") 以上两个输出是相同的 print 默认换行 stdout.write 默认不换行+++++++++ 2.sys.stderr stderr与stdout一样，用于重定向错误信息至某个文件 简而言之就是把
python sys stdout_【python】print · sys.stdout · sys.stderr
weixin_40006965的博客
12-06 122
参考文档Python重定向标准输入、标准输出和标准错误http://blog.csdn.net/lanbing510/article/details/8487997python重定向sys.stdin、sys.stdout和sys.stderrhttp://www.cnblogs.com/guyuyuan/p/6885448.html1.printprint obj 事实上是调用了sys.stdo...
python loggin记录日志，traceback打印stack
xiaojun11的专栏
08-31 2683
import time import logging log = logging.getLogger('daemon_test_home') hdlr = logging.FileHandler("/tmp/ZL_test_home.log") formatter = logging.Formatter('%(asctime)s %(levelname)s %(messag
python sys stdout_关于sys.stdout和print的区别详解
weixin_30036893的博客
02-03 781
一、sys.stdout的形式就是print的一种默认输出格式，等于print "%VALUE%"print函数是对sys.stdout的高级封装，看下print函数的解释Prints the values to a stream, or to sys.stdout by default.Optional keyword arguments:file: a file-like object (st...
python sys.stdin,sys.stdout,sys.stderr
快递小可的博客
08-22 1万+
python sys.stdin,sys.stdout,sys.stderr
python内置模块之traceback模块，堆栈信息
局外人LZ的博客
02-06 1541
traceback 模块是 Python 标准库中的一个模块，用于提供有关异常的堆栈跟踪信息。当程序发生异常时，traceback 模块可以帮助我们定位异常发生的位置，了解异常是如何传播和被处理的。堆栈跟踪信息是指在程序执行过程中，每个函数被调用时的调用栈信息，包括函数名、文件名、行号等。堆栈跟踪信息可以帮助我们追踪代码执行的路径，从而更好地理解程序的执行流程。traceback 模块提供了一系列函数和类，用于处理和格式化堆栈跟踪信息。它可以打印堆栈跟踪信息、格式化异常信息、提取堆栈跟踪信息等操作。
评论
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值