获取父功能

Question

有没有办法找到什么函数称为当前函数？例如:

def first():
    second()

def second():
    # print out here what function called this one

有任何想法吗？

Answer 1

import inspect

def first():
    return second()

def second():
    return inspect.getouterframes( inspect.currentframe() )[1]

first()[3] # 'first'

Answer 2

当您不想导入另一个模块时，这些可以很好地快速添加最少的“我在哪里”调试辅助工具。（仅限 CPython，仅用于调试。）

def LINE( back = 0 ):
    return sys._getframe( back + 1 ).f_lineno
def FILE( back = 0 ):
    return sys._getframe( back + 1 ).f_code.co_filename
def FUNC( back = 0):
    return sys._getframe( back + 1 ).f_code.co_name
def WHERE( back = 0 ):
    frame = sys._getframe( back + 1 )
    return "%s/%s %s()" % ( os.path.basename( frame.f_code.co_filename ),
                            frame.f_lineno, frame.f_code.co_name )

例子：

import sys, os # these you almost always have...

def WHERE( back = 0 ):
    frame = sys._getframe( back + 1 )
    return "%s/%s %s()" % ( os.path.basename( frame.f_code.co_filename ),
                        frame.f_lineno, frame.f_code.co_name )

def first():
    second()

def second():
    print WHERE()
    print WHERE(1)

first()

输出：

$ python fs.py
fs.py/12 second()
fs.py/9 first()