Python Error When Calling Metaclass Bases
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Typeerror: Error When Calling The Metaclass Bases Cannot Create A Consistent Method Resolution
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Error When Calling The Metaclass Bases This Constructor Takes No Arguments
just like you, helping each other. Join them; it only takes a minute: 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 error when calling the metaclass bases cannot create 'nonetype' instances differences between the two versions, but seems that knowledge isn't enough to overcome this situation. I have amateur level experience in 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
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Python Error When Calling The Metaclass Bases __init__
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Typeerror: Error When Calling The Metaclass Bases Str() Takes At Most 1 Argument (3 Given)
more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us module.__init__() takes at most 2 arguments (3 given) htmlparser Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like http://stackoverflow.com/questions/37432165/error-when-calling-the-metaclass-bases 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): 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 http://stackoverflow.com/questions/9219883/metaclass-error-type-init-takes-1-or-3-arguments 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 9 '12 at 22:31 Harley Holcombe 67.6k125561 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
Post #1 of 9 (4698 views) Permalink class error I have the following file: FileInfo.py: import UserDict class FileInfo(UserDict): "store file metadata" def __init__(self, filename=None): UserDict.__init__(self) http://www.gossamer-threads.com/lists/python/python/905168 self["name"] = filename When i import it like so: import FileInfo i get this error: Traceback (most recent call last): File "
Get Kubuntu Get Xubuntu Get Lubuntu Get UbuntuStudio Get Mythbuntu Get Edubuntu Get Ubuntu-GNOME Get UbuntuKylin Ubuntu Code of Conduct Ubuntu Wiki Community Wiki Other Support Launchpad Answers Ubuntu IRC Support AskUbuntu Official Documentation User Documentation Social Media Facebook Twitter Useful Links Distrowatch Bugs: Ubuntu PPAs: Ubuntu Web Upd8: Ubuntu OMG! Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Specialised Support Development & Programming Programming Talk Need help debugging my first python script Having an Issue With Posting ? Do you want to help us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 5 of 5 Thread: Need help debugging my first python script Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode November 29th, 2006 #1 mssever View Profile View Forum Posts Private Message Visit Homepage I Ubuntu, Therefore, I Am Join Date Jun 2006 Location Gwangju, Korea Beans 3,479 Need help debugging my first python script This is my first experience with Python, and I must confess that it's been quite frustrating. Python works really differently than any other language I've used, so I've been suffering information overload. At any rate, I'm getting the following exception: Code: Traceback (most recent call last): File "./externalPage.py", line 10, in ? class BaseHTMLProcessor(HTMLParser): TypeError: Error when calling the metaclass bases module.__init__() takes at most 2 arguments (3 given) I've commented out virtually everything. The error occurs in the remaining class definition. Here's all that's uncommented in my script: Code: #!/usr/bin/env python """This module loads a URL and rewrites the links so that they are suitable for passing through a proxy.""" import cgitb; cgitb.enable() import cgi import HTMLParser import htmlentitydefs class BaseHTMLProcessor(HTMLParser): pass cgi.test() Can anyone tell me what's wrong? What's a blub programmer? Registered Linux user #419974 Adv Reply November 30th, 2006 #2 po0f View Profile View Forum Posts Private Message Ubuntu Cappuccino Scuro Join Date Sep 2006 BeansHidden! Re: Need help debugging my first python script mssever, Notice that it's a TypeError. Try: Code: import HTMLParser class BaseHTMLProcessor(HTMLParser.HTMLParser): pass # or... from HTMLParser import HTMLParser class BaseHTMLProcessor(HTMLParser):