how to dump backtrace in python
时间: 2023-08-25 17:04:27 浏览: 52
To dump a backtrace in Python, you can use the built-in `traceback` module. Here are the steps:
1. Import the `traceback` module at the beginning of your Python script:
```python
import traceback
```
2. In the code where you want to dump the backtrace, call the `traceback.print_exc()` function. This will print the most recent exception traceback to the console.
```python
try:
# some code that may raise an exception
except Exception:
traceback.print_exc()
```
Alternatively, you can call `traceback.format_exc()` to get the traceback as a string, which you can then log or save to a file:
```python
try:
# some code that may raise an exception
except Exception:
tb_str = traceback.format_exc()
# do something with the traceback string
```
These functions will print or return the entire traceback, including all the function calls that led up to the exception. If you only want to print or retrieve the current call stack, you can use `traceback.print_stack()` or `traceback.format_stack()` instead.