Below is a sample code
def bar_2():
print("inside bar 2")
class FOO:
def __call__(self, *args):
for arg in args:
arg()
def bar_1(self):
print("inside bar 1")
foo = FOO()
foo(bar_2)
Output: inside bar 2
But if I want to call foo(bar_1)
Output: NameError: name 'bar_1' is not defined. Did you mean: 'bar_2'?
Is it possible to call bar_1 by parameter?
class methods can only be referenced with class object. So it can be like:
foo = FOO()
foo(foo.bar_1)
@classmethod decorator. You make use of an instance method.Yes. A instance method keeps a reference to its object. So you can do
foo(foo.bar_1)
To see the difference, bar_1 is a function on the class but becomes a method on the instance
>>> FOO.bar_1
<function FOO.bar_1 at 0x7f0da7583d90>
>>> foo.bar_1
<bound method FOO.bar_1 of <__main__.FOO object at 0x7f0da756a080>>
To access bar_1 by parameter, Please call it using the object foo.
def bar_2():
print("inside bar 2")
class FOO:
def __call__(self, *args):
for arg in args:
arg()
def bar_1(self):
print("inside bar 1")
foo = FOO()
foo(foo.bar_1)
Output: inside bar 1
foo(foo.bar_1)?