AttributeError | How should I call a class method? - python-3.x

Question

My class code in edit (For presentation, not a problem for my question.)
class TxtFile:
"""Responsible for the file.
Creates objects that store the text of a '.txt' file
"""
file_count = 0
#staticmethod
def question():
"""Call question()
"""
print("""If you need:
open '.txt' file for read, use .open_file
write a '.txt' file, use .write_file
append text to '.txt' file, use .append_file""")
#classmethod
def kids(cls):
"""Counts the number of open files.
Variable keeper - file_count
"""
print('I have', cls.file_count, 'file')
def __init__(self):
self.__file_name = None
self.__file_path = None
TxtFile.file_count += 1
#property
def name(self):
if self.__file_name is None:
print('You didn\'t enter a file name.\n')
else:
return self.__file_name
#property
def path(self):
if self.__file_path is None:
print('Path not specified.')
fpath.display_catalog(DATA_PATH)
else:
return self.__file_path
#name.setter
def name(self, name):
if self.__file_name is not None:
print('The file already has the specified name.\n')
else:
if self.__file_path is not None:
fpath.search_file(self.__file_path, name)
else:
print('You did not specify the path to the',
'directory with the file.\n')
#path.setter
def path(self, path):
if self.__file_path is not None:
print('The file already has the specified path.')
else:
self.__file_path = path
def open_file(self, method='read'):
"""Responsible for opening a file.
Takes 3 arguments: read, write, append
Equal: rt, wt, at
"""
if method == 'read':
pass
if method == 'write':
pass
if method == 'append':
pass
The code I want to do:
def display_info(cls):
method_list = [method for method in dir(cls)
if callable(getattr(cls, method))
and method.startswith('__') is False]
for method in method_list:
method_doc = cls.method.__doc__
print(method + ':')
if method_doc is None:
print('This method does not have docstring.')
else:
print('This is the docstring',
method_doc)
display_info(TxtFile)
Error thrown: AttributeError: type object 'TxtFile' has no attribute 'method'
I tried in this way:
method_doc = cls.__dict__[method].__doc__
Output:
This is the docstring classmethod(function) -> method
Convert a function to be a class method.
A class method receives the class as implicit first argument,
just like an instance method receives the instance.
To declare a class method, use this idiom:
class C:
#classmethod
def f(cls, arg1, arg2, ...):
...
It can be called either on the class (e.g. C.f()) or on an instance
(e.g. C().f()). The instance is ignored except for its class.
If a class method is called for a derived class, the derived class
object is passed as the implied first argument.
Class methods are different than C++ or Java static methods.
If you want those, see the staticmethod builtin.
open_file:
This is the docstring Responsible for opening a file.
Takes 3 arguments: read, write, append
Equal: rt, wt, at
question:
This is the docstring staticmethod(function) -> method
Convert a function to be a static method.
A static method does not receive an implicit first argument.
To declare a static method, use this idiom:
class C:
#staticmethod
def f(arg1, arg2, ...):
...
It can be called either on the class (e.g. C.f()) or on an instance
(e.g. C().f()). Both the class and the instance are ignored, and
neither is passed implicitly as the first argument to the method.
Static methods in Python are similar to those found in Java or C++.
For a more advanced concept, see the classmethod builtin.
I want to have a function that will output dcstring of class methods.
I have been learning Python for less than a month, so my knowledge is limited. In the code, I use what I know. I would like to know the solution and get an answer how it works.