从 Python 代码中的方法打印当前调用堆栈 [英] Print current call stack from a method in Python code

问题描述

在 Python 中，如何从方法中打印当前调用堆栈(用于调试目的).

In Python, how can I print the current call stack from within a method (for debugging purposes).

推荐答案

这是通过 traceback 模块，并打印它:

Here's an example of getting the stack via the traceback module, and printing it:

import traceback

def f():
    g()

def g():
    for line in traceback.format_stack():
        print(line.strip())

f()

# Prints:
# File "so-stack.py", line 10, in <module>
#     f()
# File "so-stack.py", line 4, in f
#     g()
# File "so-stack.py", line 7, in g
#     for line in traceback.format_stack():

如果你真的只想把栈打印到stderr，你可以使用:

If you really only want to print the stack to stderr, you can use:

traceback.print_stack()

或者打印到标准输出(如果想将重定向输出保持在一起很有用)，使用:

Or to print to stdout (useful if want to keep redirected output together), use:

traceback.print_stack(file=sys.stdout)

但是通过 traceback.format_stack() 获取它可以让您随心所欲地使用它.

But getting it via traceback.format_stack() lets you do whatever you like with it.

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