Python Check if Methods or interface is implemented before runtimeForce child class to override parent's methodspython 2 code: if python 3 then sys.exit()'Queue' object has no attribute 'size'In Python 3, how to prevent direct creation of a mixin class?Raise exception while defining a class improperlyWhat should I put in the body of an abstract method in PythonOOP code works fine in Python 3.6 but in Python 2.7 throws max recursion depth runtime error__mro__ attribute missing on issubclass check when implementing protocolsWhen does Python check whether a concrete subclass of an ABC implements the required methods?Python. Bound Methods, Mixins & Class DecoratorsAttributeError: module 'asyncio' has no attribute 'coroutine' (Python 3.6.4)

Tikzcd pullback square issue

Ex-contractor published company source code and secrets online

As a 16 year old, how can I keep my money safe from my mother?

Does the Shapechange spell allow one to use Innate Spellcasting of the creature they turned into?

In the movie Harry Potter and the Order or the Phoenix, why didn't Mr. Filch succeed to open the Room of Requirement if it's what he needed?

In a topological space if there exists a loop that cannot be contracted to a point does there exist a simple loop that cannot be contracted also?

What word can be used to describe a bug in a movie?

Blocking people from taking pictures of me with smartphone

How to mark beverage cans in a cooler for a blind person?

How to display a duet in lyrics?

Why are physicists so interested in irreps if in their non-block-diagonal form they mix all components of a vector?

How does The Fools Guild make its money?

Looking for a new job because of relocation - is it okay to tell the real reason?

Can I call myself an assistant professor without a PhD

What happen if I gain the control of aura that enchants an opponent's creature? Would the aura stay attached?

How to remove something from the slug/url

How can glass marbles naturally occur in a desert?

Is there a way to create a report for the failed entries while calling REST API

Can a character who casts Shapechange and turns into a spellcaster use innate spellcasting to cast spells with a long casting time?

Should I self-publish my novella on Amazon or try my luck getting publishers?

When "he's gone" means "he's dead", is it a contraction of "he is" or "he has"?

Can you use the Fly spell to move underwater at a speed of 60 feet?

Physics of Guitar frets and sound

Dereferencing a pointer in a for loop initializer creates a seg fault



Python Check if Methods or interface is implemented before runtime


Force child class to override parent's methodspython 2 code: if python 3 then sys.exit()'Queue' object has no attribute 'size'In Python 3, how to prevent direct creation of a mixin class?Raise exception while defining a class improperlyWhat should I put in the body of an abstract method in PythonOOP code works fine in Python 3.6 but in Python 2.7 throws max recursion depth runtime error__mro__ attribute missing on issubclass check when implementing protocolsWhen does Python check whether a concrete subclass of an ABC implements the required methods?Python. Bound Methods, Mixins & Class DecoratorsAttributeError: module 'asyncio' has no attribute 'coroutine' (Python 3.6.4)






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








-1















I'm creating an interface Mixins that contains methods that will throw error if it is not implemented, however it only happens during run time when the method is called, i would like to have python check if method is implemented before run time.



class TestInterface():
def get_testing_name(self):
raise NotImplementedError

def do_something(self):
return self.get_testing_name()


class Testing(TestInterface):
def __init__(self):
super().do_something()


In my Testing class, i didn't defined get_testing_name method, hence it will raise NotImplementedError. However this will only happen on run time



How do i make sure python check if method is not implemented before run time?










share|improve this question



















  • 1





    this may be related: stackoverflow.com/questions/44576167/…

    – hiro protagonist
    Mar 27 at 7:05

















-1















I'm creating an interface Mixins that contains methods that will throw error if it is not implemented, however it only happens during run time when the method is called, i would like to have python check if method is implemented before run time.



class TestInterface():
def get_testing_name(self):
raise NotImplementedError

def do_something(self):
return self.get_testing_name()


class Testing(TestInterface):
def __init__(self):
super().do_something()


In my Testing class, i didn't defined get_testing_name method, hence it will raise NotImplementedError. However this will only happen on run time



How do i make sure python check if method is not implemented before run time?










share|improve this question



















  • 1





    this may be related: stackoverflow.com/questions/44576167/…

    – hiro protagonist
    Mar 27 at 7:05













-1












-1








-1








I'm creating an interface Mixins that contains methods that will throw error if it is not implemented, however it only happens during run time when the method is called, i would like to have python check if method is implemented before run time.



class TestInterface():
def get_testing_name(self):
raise NotImplementedError

def do_something(self):
return self.get_testing_name()


class Testing(TestInterface):
def __init__(self):
super().do_something()


In my Testing class, i didn't defined get_testing_name method, hence it will raise NotImplementedError. However this will only happen on run time



How do i make sure python check if method is not implemented before run time?










share|improve this question














I'm creating an interface Mixins that contains methods that will throw error if it is not implemented, however it only happens during run time when the method is called, i would like to have python check if method is implemented before run time.



class TestInterface():
def get_testing_name(self):
raise NotImplementedError

def do_something(self):
return self.get_testing_name()


class Testing(TestInterface):
def __init__(self):
super().do_something()


In my Testing class, i didn't defined get_testing_name method, hence it will raise NotImplementedError. However this will only happen on run time



How do i make sure python check if method is not implemented before run time?







python-3.x






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 27 at 6:51









nickernicker

791 silver badge11 bronze badges




791 silver badge11 bronze badges










  • 1





    this may be related: stackoverflow.com/questions/44576167/…

    – hiro protagonist
    Mar 27 at 7:05












  • 1





    this may be related: stackoverflow.com/questions/44576167/…

    – hiro protagonist
    Mar 27 at 7:05







1




1





this may be related: stackoverflow.com/questions/44576167/…

– hiro protagonist
Mar 27 at 7:05





this may be related: stackoverflow.com/questions/44576167/…

– hiro protagonist
Mar 27 at 7:05












1 Answer
1






active

oldest

votes


















0














I don't know if I understood you.
Maybe that was what you wanted ?:



try:
t = Testing()
except NotImplementedError:
print("Fail")





share|improve this answer
























    Your Answer






    StackExchange.ifUsing("editor", function ()
    StackExchange.using("externalEditor", function ()
    StackExchange.using("snippets", function ()
    StackExchange.snippets.init();
    );
    );
    , "code-snippets");

    StackExchange.ready(function()
    var channelOptions =
    tags: "".split(" "),
    id: "1"
    ;
    initTagRenderer("".split(" "), "".split(" "), channelOptions);

    StackExchange.using("externalEditor", function()
    // Have to fire editor after snippets, if snippets enabled
    if (StackExchange.settings.snippets.snippetsEnabled)
    StackExchange.using("snippets", function()
    createEditor();
    );

    else
    createEditor();

    );

    function createEditor()
    StackExchange.prepareEditor(
    heartbeatType: 'answer',
    autoActivateHeartbeat: false,
    convertImagesToLinks: true,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: 10,
    bindNavPrevention: true,
    postfix: "",
    imageUploader:
    brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
    contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
    allowUrls: true
    ,
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    );



    );













    draft saved

    draft discarded


















    StackExchange.ready(
    function ()
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55371360%2fpython-check-if-methods-or-interface-is-implemented-before-runtime%23new-answer', 'question_page');

    );

    Post as a guest















    Required, but never shown

























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    I don't know if I understood you.
    Maybe that was what you wanted ?:



    try:
    t = Testing()
    except NotImplementedError:
    print("Fail")





    share|improve this answer





























      0














      I don't know if I understood you.
      Maybe that was what you wanted ?:



      try:
      t = Testing()
      except NotImplementedError:
      print("Fail")





      share|improve this answer



























        0












        0








        0







        I don't know if I understood you.
        Maybe that was what you wanted ?:



        try:
        t = Testing()
        except NotImplementedError:
        print("Fail")





        share|improve this answer













        I don't know if I understood you.
        Maybe that was what you wanted ?:



        try:
        t = Testing()
        except NotImplementedError:
        print("Fail")






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Mar 27 at 7:08









        MikeyMikey

        1615 bronze badges




        1615 bronze badges





















            Got a question that you can’t ask on public Stack Overflow? Learn more about sharing private information with Stack Overflow for Teams.







            Got a question that you can’t ask on public Stack Overflow? Learn more about sharing private information with Stack Overflow for Teams.



















            draft saved

            draft discarded
















































            Thanks for contributing an answer to Stack Overflow!


            • Please be sure to answer the question. Provide details and share your research!

            But avoid


            • Asking for help, clarification, or responding to other answers.

            • Making statements based on opinion; back them up with references or personal experience.

            To learn more, see our tips on writing great answers.




            draft saved


            draft discarded














            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55371360%2fpython-check-if-methods-or-interface-is-implemented-before-runtime%23new-answer', 'question_page');

            );

            Post as a guest















            Required, but never shown





















































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown

































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown







            Popular posts from this blog

            Kamusi Yaliyomo Aina za kamusi | Muundo wa kamusi | Faida za kamusi | Dhima ya picha katika kamusi | Marejeo | Tazama pia | Viungo vya nje | UrambazajiKuhusu kamusiGo-SwahiliWiki-KamusiKamusi ya Kiswahili na Kiingerezakuihariri na kuongeza habari

            Swift 4 - func physicsWorld not invoked on collision? The Next CEO of Stack OverflowHow to call Objective-C code from Swift#ifdef replacement in the Swift language@selector() in Swift?#pragma mark in Swift?Swift for loop: for index, element in array?dispatch_after - GCD in Swift?Swift Beta performance: sorting arraysSplit a String into an array in Swift?The use of Swift 3 @objc inference in Swift 4 mode is deprecated?How to optimize UITableViewCell, because my UITableView lags

            Access current req object everywhere in Node.js ExpressWhy are global variables considered bad practice? (node.js)Using req & res across functionsHow do I get the path to the current script with Node.js?What is Node.js' Connect, Express and “middleware”?Node.js w/ express error handling in callbackHow to access the GET parameters after “?” in Express?Modify Node.js req object parametersAccess “app” variable inside of ExpressJS/ConnectJS middleware?Node.js Express app - request objectAngular Http Module considered middleware?Session variables in ExpressJSAdd properties to the req object in expressjs with Typescript