AttributeError module object has no attribute

Question

I have two python modules   a py  import b  def hello      print  hello   print  a py  print hello   print b hi     b py  import a  def hi      print  hi    When I run a py  I get   AttributeError   module  object has no attribute  hi    What does the error mean   How do I fix it

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The order of the importing was the reason why I was having issues   a py                  this is a problem   move this to below               from b import NewThing  class ProblemThing object       pass  class A object                           add it here      from b import NewThing                       nt   NewThing      pass   b py   from a import ProblemThing  class NewThing ProblemThing       pass   Just another example of how it might look  similar to RichieHindie s answer  but with classes

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I faced the same issue  fixed by using reload   import the module name from importlib import reload reload the module name

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I have also seen this error when inadvertently naming a module with the same name as one of the standard Python modules   E g  I had a module called commands which is also a Python library module   This proved to be difficult to track down as it worked correctly on my local development environment but failed with the specified error when running on Google App Engine

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I have crossed with this issue many times  but I didnt try to dig deeper about it  Now I understand the main issue   This time my problem was importing Serializers   django and restframework   from different modules such as the following    from rest framework import serializers  from common import serializers as srlz from prices import models as mdlpri    the line below was the problem  srlzprod  from products import serializers as srlzprod   I was getting a problem like this    from product import serializers as srlzprod ModuleNotFoundError  No module named  product     What I wanted to accomplished was the following    class CampaignsProductsSerializers srlz DynamicFieldsModelSerializer       bank name   serializers CharField trim whitespace True       coupon type   serializers SerializerMethodField       promotion description   serializers SerializerMethodField          the nested relation of the line below     product   srlzprod ProductsSerializers fields   id   name    read only True      So  as mentioned by the lines above how to solve it   top-level import    I proceed to do the following changes      change product   srlzprod ProductsSerializers fields   id   name    read only True     by  product   serializers SerializerMethodField      and create the following method and call from there the required serializer class def get product self  obj           from products import serializers as srlzprod         p fields     id    name             return srlzprod ProductsSerializers              obj product  fields p fields  many False            data    Therefore  django runserver was executed without problems      project settings manage py runserver 0 8002 --settings settings development mlazo Performing system checks     System check identified no issues  0 silenced   April 25  2020 - 13 31 56 Django version 2 0 7  using settings  settings development mlazo  Starting development server at http   0 8002  Quit the server with CONTROL-C     Final state of the code lines was the following    from rest framework import serializers  from common import serializers as srlz from prices import models as mdlpri  class CampaignsProductsSerializers srlz DynamicFieldsModelSerializer       bank name   serializers CharField trim whitespace True       coupon type   serializers SerializerMethodField       promotion description   serializers SerializerMethodField       product   serializers SerializerMethodField        class Meta          model   mdlpri CampaignsProducts         fields      all         def get product self  obj           from products import serializers as srlzprod         p fields     id    name             return srlzprod ProductsSerializers              obj product  fields p fields  many False            data    Hope this could be helpful for everybody else   Greetings

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You have mutual top-level imports  which is almost always a bad idea   If you really must have mutual imports in Python  the way to do it is to import them within a function     In b py  def cause a to do something        import a     a do something     Now a py can safely do import b without causing problems    At first glance it might appear that cause a to do something   would be hugely inefficient because it does an import every time you call it  but in fact the import work only gets done the first time   The second and subsequent times you import a module  it s a quick operation

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Not sure how but the below change sorted my issue   i was having the name of file and import name same for eg i had file name as emoji py and i was trying to import emoji  But changing the name of file solved the issue    Hope so it helps

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SoLvEd Python is looking for the a object within your a py module  Either RENAME that file to something else or use from   future   import absolute import   at the top of your a py module

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I got this error by referencing an enum which was imported in a wrong way  e g    from package import MyEnumClass         in some method  return MyEnumClass Member   Correct import   from package MyEnumClass import MyEnumClass   Hope that helps someone

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In my case working with python 2 7 with numpy version 1 15 0  it worked with pip install statsmodels   quot 0 10 0 quot

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All the above answers are great  but I d like to chime in here  If you did not spot any issue mentioned above  try clear up your working environment  It worked for me

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Circular imports cause problems  but Python has ways to mitigate it built-in   The problem is when you run python a py  it runs a py but not mark it imported as a module  So in turn a py -  imports module b -  imports module a -  imports module b  The last import a no-op since b is currently being imported and Python guards against that  And b is an empty module for now  So when it executes b hi    it can t find anything   Note that the b hi   that got executed is during a py -  module b -  module a  not in a py directly   In your specific example  you can just run python -c  import a  at top-level  so the first execution of a py is registered as importing a module

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For me  the reason for this error was that there was a folder with the same name as the python module I was trying to import   -- core   lt -- empty directory on the same level as the module that throws the error  -- core py  And python treated that folder as a python package and tried to import from that empty package  quot core quot   not from core py  Seems like for some reason git left that empty folder during the branches switch So I just removed that folder and everything worked like a charm

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on ubuntu 18 04   virtualenv  python 3 6 x   the following reload snippet solved the problem for me   main py  import my module    my module py from importlib import reload   reload  reload my module   print my module  print my modeule hello      where    --main py      --my module py   for more documentation check   here

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The problem is the circular dependency between the modules  a imports b and b imports a  But one of them needs to be loaded first - in this case python ends up initializing module a before b and b hi   doesn t exist yet when you try to access it in a

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I experienced this error because the module was not actually imported  The code looked like this   import a b  a c         something a b  something a c  something a d     My addition  which failed    The last line resulted in an AttributeError  The cause was that I had failed to notice that the submodules of a  a b and a c  were explicitly imported  and assumed that the import statement actually imported a

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I ran into this problem when I checked out an older version of a repository from git  Git replaced my  py files  but left the untracked  pyc files  Since the  py files and  pyc files were out of sync  the import command in a  py file could not find the corresponding module in the  pyc files   The solution was simply to delete the  pyc files  and let them be automatically regenerated

[python] AttributeError: 'module' object has no attribute

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