Python error AttributeError module object has no attribute

Question

I m totally new to Python and I know this question was asked many times  but unfortunately it seems that my situation is a bit different    I have created a package  or so I think   The catalog tree is like this  mydir     lib      init   py          mod1     init   py  mod11 py   In parenthesis there are files in the catalog  Both   init   py files are zero length  The file mydir lib mod1 mod11 py contains the following  def mod12        print  quot mod12 quot   Now  I run python  then import lib  which works OK  then lib mod11   or lib mod12    Either of the last two gives me the subject error message  Actually dir lib  after Step 2 does not display mod11 or mod12 either  It seems I m missing something really simple   I m using Python 2 6 in Ubuntu 10 10  Thank you

User · Answer

My solution is put those imports in   init   py of lib   in file    init   py import mod1   Then    import lib lib mod1   would work fine

User · Answer

More accurately  your mod1 and lib directories are not modules  they are packages  The file mod11 py is a module    Python does not automatically import subpackages or modules  You have to explicitly do it  or  cheat  by adding import statements in the initializers     gt  gt  gt  import lib  gt  gt  gt  dir lib      builtins        doc        file        name        package        path      gt  gt  gt  import lib pkg1  gt  gt  gt  import lib pkg1 mod11  gt  gt  gt  lib pkg1 mod11 mod12   mod12   An alternative is to use the from syntax to  pull  a module from a package into you scripts namespace    gt  gt  gt  from lib pkg1 import mod11   Then reference the function as simply mod11 mod12

User · Answer

The way I would do it is to leave the    init   py files empty  and do   import lib mod1 mod11 lib mod1 mod11 mod12     or  from lib mod1 mod11 import mod12 mod12     You may find that the mod1 dir is unnecessary  just have mod12 py in lib

User · Answer

When you import lib  you re importing the package  The only file to get evaluated and run in this case is the 0 byte   init   py in the lib directory    If you want access to your function  you can do something like this from lib mod1 import mod1 and then run the mod12 function like so mod1 mod12      If you want to be able to access mod1 when you import lib  you need to put an import mod1 inside the   init   py file inside the lib directory

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

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