Error When Calling The Metaclass Bases
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Error When Calling The Metaclass Bases Cannot Create A Consistent Method Resolution
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Error When Calling The Metaclass Bases Module.__init__() Takes At Most 2 Arguments
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Error When Calling The Metaclass Bases Module.__init__() Takes At Most
Sign up Error when calling the metaclass bases up vote 0 down vote favorite Finding it very difficult to wrap around this basic problem. I'm using python 2.7.10 to follow a flask tutorial being delivered using python 3.4. I'm aware of some differences between the two versions, but seems that knowledge isn't enough to overcome this situation. I have amateur level experience in error when calling the metaclass bases python python. Have a feeling its got something to do with class definition, but unable to nail it. And yes i went through the solutions for similar error but wasn't able to relate the solution to my problem. Traceback (most recent call last): File "manage.py", line 5, in
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the error when calling the metaclass bases youtube company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions typeerror error when calling the metaclass bases module.__init__() takes at most 2 arguments Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million typeerror error when calling the metaclass bases multiple bases have instance lay-out conflict programmers, just like you, helping each other. Join them; it only takes a minute: Sign up metaclass error: type.__init__() takes 1 or 3 arguments up vote 4 down vote favorite I have a metaclass: class MyMeta(type): http://stackoverflow.com/questions/37432165/error-when-calling-the-metaclass-bases def __init__(cls, name, bases, dct): # Do something ... return super(MyMeta, cls).__init__(cls, name, bases, dct) and a class: class MyClass(object): __metaclass__ = MyMeta When I use these I get the following error: E TypeError: Error when calling the metaclass bases E type.__init__() takes 1 or 3 arguments What's the problem, and why does type.__init__() take a precisely variable number of arguments? python metaclass share|improve this question edited Feb 10 '12 at 0:31 asked Feb http://stackoverflow.com/questions/9219883/metaclass-error-type-init-takes-1-or-3-arguments 9 '12 at 22:31 Harley Holcombe 67.3k125561 add a comment| 1 Answer 1 active oldest votes up vote 9 down vote accepted The problem is that in the upgrade from python 2.5 to python 2.6 type.__init__() was changed so that you are no longer required to pass in cls. So simply make the super call: return super(MyMeta, cls).__init__(name, bases, dct) Another solution is to avoid the super call altogether and do this (although it's a little less nice): return type.__init__(cls, name, bases, dct) And everything will work fine (in python >= 2.6). As to why type.__init__() can take differing numbers of arguments, check out the documentation. It's so that as well as using it as a constructor, you can call type(myobject) and it will return the type of myobject: >>> number = 1 >>> type(number)
in python Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] On Tue, Apr 22, 2014 at 09:48:51AM -0400, Jorge Leon wrote: > https://mail.python.org/pipermail//tutor/2014-April/101024.html Good day, > > > I have programmed a base class for an https://mascha.me/2010/01/10/urwhatu-typeerror-error-when-calling-the-metaclass-bases/ environment I have with no problem, > but when it comes to referencing the base class's constructor in the > derived class's constructor I have been getting errors: What version of Python are you using? With super, that is actually critical. > *TypeError: Error when calling the metaclass bases* error when > * module.__init__() takes at most 2 arguments (3 given)* Read the error message. Why is it refering to *module*.__init__? My guess is that you have a module called Obstacle, and a class called Obstacle, and you have mixed them up. Maybe you are doing this: # file Obstacle.py class Obstacle: # code goes here # Another file import Obstacle class Cylinder(Obstacle) I error when calling can reproduce your error that way: py> import math py> class X(math): ... pass ... Traceback (most recent call last): File "
output ofpluginsSonc.rb - Start ONConnectTryregexp - Test regularexpressionsCopyrightMy Gnupg KeyPhotosXML nutzen Search for: TypeError: Error when calling the metaclassbases This article helped me by fixing this exception. The following code gave this exception ... from a import A class B (A): ... but this was wrong because my class had the same name as the file it was in. This meant that my class had the same name as the module. To make it right it should be: ... from a import A class B (A.A): ... Share this:TwitterGooglePocketMoreFacebookLinkedInRedditTumblrPinterestPrintEmailLike this:Like Loading... Related Posted in Misc and tagged Programming, python, python for java programmers on 2010-01-10 by infram. Leave a comment Post navigation ← Monty says: Help keep the Internetfree Lazy kids. → Leave a Reply Cancel reply Enter your comment here... Please log in using one of these methods to post your comment: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOut/Change) You are commenting using your Facebook account. (LogOut/Change) You are commenting using your Google+ account. (LogOut/Change) Cancel Connecting to %s Notify me of new comments via email. Pages Applications Audica Radio More ASftavm - Fan, Temperature andVoltagemonitor ASwvdial - Frontend forwvdial KaDoSu - categorized documentsearch Specification for filtering text output ofplugins Sonc.rb - Start ONConnect Tryregexp - Test regularexpressions Quick Question Urlando Copyright My Gnupg Key Photos XML nutzen 3d apple BachelorArbeit bank bnd book bundestag c chaosradio express chaos tv command line commandline tools computer constant propagation design developement disk dns eclipse encryption eu find unused code foto free fun hadoop hibernate images iso java jvm kadosu kinder laptop lattice liberty lichtenstein linux lucene memory microsoft Misc nice onlinedurchsuchung open source patch patent patente patents performance petition photo presentation Programming python quotes release revision control satire search security short film social software software bugs software patents sozial steuerhinterziehung ubuntu unix vania zouravliov video visualization windows überwachungShare this blog E-Mail-Abo Um neue