查找python中哪个函数正在使用给定的类

Question

我有class

class A:
def __init__(self):
print(i was used by :)
# if i call this class from the function below,

def my_func():
a = A()
# I need class A to print that "i was used in: my_func() "

有解决办法吗?

Answer 1

如果知道函数名:

你可以试试这样写:

class A:
def __init__(self, func):
print('i was used by:', func.__name__)
def my_func(func):
a = A(func)
my_func(my_func)

输出:

i was used by: my_func

您将指定函数实例，这是这里最优的方式，然后只使用__name__来获取函数的名称。

如果你不知道函数名:

您可以尝试inspect模块:

import inspect
class A:
def __init__(self):
print('i was used by:', inspect.currentframe().f_back.f_code.co_name)
def my_func():
a = A()
my_func()

或者试试这个:

import inspect
class A:
def __init__(self):
cur = inspect.currentframe()
a = inspect.getouterframes(cur, 2)[1][3]
print('i was used by:', a)
def my_func():
a = A()
my_func()

两输出:

i was used by: my_func