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python 异常回溯_关于python：在循环中捕获异常回溯，然后在脚本末尾引发错误...

發布時間：2025/3/15 python 24 豆豆

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我正在嘗試捕獲所有異常錯誤，然后在腳本結尾處使其引發/顯示所有回溯...

我有一個主腳本，例如調用我的下標：

errors = open('MISC/ERROR(S).txt', 'a')

try:

execfile("SUBSCRIPTS/Test1.py", {})

except Exception:

## Spread over two calls of errors.write for readability in code...

errors.write(strftime('%d/%m/%Y %H:%M:%S') +"

errors.write(traceback.format_exc() + '

try:

execfile("SUBSCRIPTS/Test2.py", {})

except Exception:

## Spread over two calls of errors.write for readability in code...

errors.write(strftime('%d/%m/%Y %H:%M:%S') +"

errors.write(traceback.format_exc() + '

errors.close()

此腳本使用追溯模塊從腳本中檢索錯誤...

在下一個示例中，這是我當前腳本的樣子：

for x in y:

if"example" in x:

for tweet in tweetlist:

# Try

try:

twitter.update_status(status=tweet)

# Do some other stuff here if it suceeeds like...

print"oo example worked"

# Damn it failed, grab the whole traceback?

except Exception as reason:

FailedTweet = True

# Do some other stuff here like...

print"I did other stuff"

if FailedTweet:

print reason # Printing the reason because I don't know how to throw the exception error (full error)

基本上，存在一個大循環，可能會在此行中出現錯誤：twitter.update_status(status=tweet)，如果確實如此，我希望它能夠捕獲回溯錯誤，因為它在一個循環中，然后在腳本完成時，它可能不止一個我希望它將所有回溯錯誤發送回主腳本，以便將其全部寫入錯誤文件。

從代碼的第一位向文件寫入錯誤的示例：

# 17/08/2014 12:30:00

# Traceback (most recent call last):

# ? File"C:\Main.py", line 117, in execute_subscripts

# ? ? execfile("SUBSCRIPTS/Test1.py", {})

# ? File"SUBSCRIPTS/Test1.py", line 440, in

# ? ? twitter.update_status(status=string)

# ? File"C:\Python27\lib\site-packages\twython\endpoints.py", line 90, in update_status

# ? ? return self.post('statuses/update', params=params)

# ? File"C:\Python27\lib\site-packages\twython\api.py", line 234, in post

# ? ? return self.request(endpoint, 'POST', params=params, version=version)

# ? File"C:\Python27\lib\site-packages\twython\api.py", line 224, in request

# ? ? content = self._request(url, method=method, params=params, api_call=url)

# ? File"C:\Python27\lib\site-packages\twython\api.py", line 194, in _request

# ? ? retry_after=response.headers.get('retry-after'))

# TwythonError: Twitter API returned a 403 (Forbidden), This request looks like it might be automated. To protect our users from spam and other malicious activity, we can't complete this action right now. Please try again later.

我將如何實現這一點，這很難解釋，所以如果有什么不對的地方，請詢問。

只需將回溯數據保存在列表中，然后在循環完成后打印列表的內容。

import traceback

reasons = []

for x in y:

if"example" in x:

for tweet in tweetlist:

# Try

try:

twitter.update_status(status=tweet)

# Do some other stuff here if it suceeeds like...

print"oo example worked"

# Damn it failed, grab the whole traceback?

except Exception:

reasons.append(traceback.format_exc())

# Do some other stuff here like...

print"I did other stuff"

for reason in reasons:

print reason

# If you want to raise a single exception that shows the traceback for

# each exception, you can do this:

class ChainedException(Exception):

def __init__(self, msg):

msg ="The following exceptions occurred:

{}".format(msg)

if reasons:

raise ChainedException('

'.join(reasons))

ChainedException的示例用法：

reasons = []

for i in range(5):

try:

raise Exception("Blah {}".format(i))

except Exception:

reasons.append(traceback.format_exc())

if reasons:

raise ChainedException("

".join(reasons))

輸出：