PDB：在控制台中时出现异常 - 完整堆栈跟踪

发布于 2024-08-30 17:01:41 字数 261 浏览 14 评论 0原文

在 pdb 控制台中，输入导致异常的语句只会导致单行堆栈跟踪，例如，

(Pdb) someFunc()
*** TypeError: __init__() takes exactly 2 arguments (1 given)

但是我想找出 someFunc 中错误的确切来源。即在这种情况下，__init__ 附加到哪个类。

有没有办法在 Pdb 中获取完整的堆栈跟踪？

原文

When at the pdb console, entering a statement which causes an exception results in just a single line stack trace, e.g.

(Pdb) someFunc()
*** TypeError: __init__() takes exactly 2 arguments (1 given)

However I'd like to figure out where exactly in someFunc the error originates. i.e. in this case, which class __init__ is attached to.

Is there a way to get a full stack trace in Pdb?

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羁客 2024-09-06 17:01:41

最简单的方法是在代码中定义一个函数，调用 someFunc() 并打印回溯，然后从 Pdb 调用该函数。

或者，您可以自己打印回溯。给定这个源代码：

def foo(a):
    pass

def bar(b):
    foo(b, 2)

def some_func():
    bar(3)

if __name__=='__main__':
    import pdb
    pdb.set_trace()

那么我们可以这样做：

C:\temp>test.py
--Return--
> c:\temp\test.py(12)<module>()->None
-> pdb.set_trace()
(Pdb) import traceback
(Pdb) exec "try: some_func()\nexcept: traceback.print_exc()"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\temp\test.py", line 8, in some_func
    bar(3)
  File "C:\temp\test.py", line 5, in bar
    foo(b, 2)
TypeError: foo() takes exactly 1 argument (2 given)
(Pdb)

The easiest way would be to define a function in your code that calls someFunc() and prints the traceback then call that from Pdb.

Alternatively you can print the traceback for yourself. Given this source code:

def foo(a):
    pass

def bar(b):
    foo(b, 2)

def some_func():
    bar(3)

if __name__=='__main__':
    import pdb
    pdb.set_trace()

Then we can do this:

C:\temp>test.py
--Return--
> c:\temp\test.py(12)<module>()->None
-> pdb.set_trace()
(Pdb) import traceback
(Pdb) exec "try: some_func()\nexcept: traceback.print_exc()"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\temp\test.py", line 8, in some_func
    bar(3)
  File "C:\temp\test.py", line 5, in bar
    foo(b, 2)
TypeError: foo() takes exactly 1 argument (2 given)
(Pdb)

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指尖凝香 2024-09-06 17:01:41

pdb 支持递归调用的 debug 语句：

$ nosetests xxxx -x --pdb
-> some code line with error
(Pdb) debug os.sdfafa()  # something that raises exception
ENTERING RECURSIVE DEBUGGER
> <string>(1)<module>()  # new line that raised excetion
((Pdb))  # number of parentheses indicates debugger recusion depth
((Pdb)) debug os.someothersdfsdf()
ENTERING RECURSIVE DEBUGGER
> <string>(1)<module>()
(((Pdb)))

pdb supports debug statements for recursive invocation:

$ nosetests xxxx -x --pdb
-> some code line with error
(Pdb) debug os.sdfafa()  # something that raises exception
ENTERING RECURSIVE DEBUGGER
> <string>(1)<module>()  # new line that raised excetion
((Pdb))  # number of parentheses indicates debugger recusion depth
((Pdb)) debug os.someothersdfsdf()
ENTERING RECURSIVE DEBUGGER
> <string>(1)<module>()
(((Pdb)))

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