如何在Python中保存类调用中插入的函数数量？

Question

如何节省函数的needed_function调用次数？它被many_functions_that_calling_needed_function1等函数调用。我有如下的类模式：

class MyClass
    def __init__
...
    def my_function
    ...
    @staticmethod
    def needed_function
        if first_statement:
            """Count number of calling if statement"""
        elif second statement:
            """Count number of calling elif statement"""

    def many_functions_that_calling_needed_function1
        self.needed_function()

    def many_functions_that_calling_needed_function2
        self.needed_function()

    def many_functions_that_calling_needed_function3
        self.needed_function()

    def many_functions_that_calling_needed_function4
        self.needed_function()

Answer 1

如果你只需要跟踪一个类(一个方法)内的一个函数被调用了多少次，你可以这样做：

class TestClass:
    def __init__(self):
        self.calls=0

    def needed_function(self):
        """if this function gets called, increase the value of self.calls by 1"""
        self.calls+=1
        # add whatever else you want here

c=TestClass()
print(c.calls)    # prints 0 cause needed_function hasn't been called yet
c.needed_function()    # needed_function is called here
print(c.calls)     # prints 1
c.needed_function()    # called again
print(c.calls)    # prints 2