Python Stacktrace模塊回溯行錯誤

Question

我有以下Python程序：

import traceback
import sys

try:

    3/0
except OverflowError as e:
    exc_type, exc_value, exc_traceback = sys.exc_info()
    formatted_lines = traceback.format_exc().splitlines()

    print(" It looks like in the arithmetic operation :" , formatted_lines[2], " )  #gets the offending line
    print (at line number " , exc_traceback.tb_lineno )  #gets the line number

except ZeroDivisionError as e:
   exc_type, exc_value, exc_traceback = sys.exc_info()
   formatted_lines = traceback.format_exc().splitlines()
   print(" It looks like in the arithmetic operation :" , formatted_lines[2], " )  #gets the offending line
   print (at line number " , exc_traceback.tb_lineno )  #gets t

對於像上面這樣的簡單程序，stacktrace返回正確的行號，但是對於像下面這樣的更復雜的方法，Python會拋出更多的stacktrace（最后一次調用是最后一個），有沒有辦法找出stacktrace的索引，例如： formatted_lines[2]獲取最新通話。

try:
 def prize():
    print("hello")

 def main():
    prize()

Catch:
.....

任何幫助，將不勝感激。

---

還嘗試了這個：

import traceback
import sys
import linecache


try:

      2/0

except ZeroDivisionError as e:
        filename = exc_traceback.tb_frame.f_code.co_filename
        lineno = exc_traceback.tb_lineno
        line = linecache.getline(filename, lineno)
        print "exception occurred at %s:%d: %s" % (filename, lineno, line)

我在最后一行“無效語法”中收到錯誤

當我嘗試時：

print  (filename, lineno, line)

我收到一個錯誤：

 Traceback (most recent call last):
  File "C:\Users\Anu\Desktop\test.py", line 39, in <module>
    filename = exc_traceback.tb_frame.f_code.co_filename
NameError: name 'exc_traceback' is not defined

Answer 1

請不要嘗試使用format_exc的輸出來解析堆棧跟蹤。 這僅是為了產生人類可讀的堆棧跟蹤。

您應該改用linecache來獲取有問題的行：

exc_type, exc_value, exc_traceback = sys.exc_info()
filename = exc_traceback.tb_frame.f_code.co_filename
lineno = exc_traceback.tb_lineno
line = linecache.getline(filename, lineno)
print("exception occurred at %s:%d: %s" % (filename, lineno, line))