Circular dependency in Python how to solve it?

Asked Jul 22 '15 at 07:16

Active Jul 22 '15 at 07:16

Viewed 91 times

Here's the structure of my project:

MyProject
|
|---- package1
|       |
|       |---- classA needs classXYZ
|       |-----classB needs classXYZ
|       |-----classC
|
|-----package2
|       |
|       |-----classXYZ (path creator)
|
|-----package3
|       |
|       |-----classQ (subclass of classR)
|       |-----classR 
|
|-----package4
|       |
|       |-----classDB needs classXYZ

ClassQ needs classA, classB, classR, classDB and classXYZ, So, in classQ I have:

    from package1 import classA
    from package1 import classB
    from package2 import classXYZ 
    from package3 import classR
    from package4 import classDB

However, both class classA and classB use classXYZ which results in fact that in classQ I'm getting the error: Import Error: no module named classR. (Class Q inherits from class R).

The question is: how to solve this? Class Q is some kind of main class, which uses functions available in other modules to make a working application. Any help will be appreciated.

asked Jul 22 '15 at 07:16

mirx

6

I don't see a circular dependency here. – Martijn Pieters Jul 22 '15 at 07:18
Also, a circular dependency would result in a *different* error. There would be a failure to load a specific name *from* a module, not a failure to find a module itself. – Martijn Pieters Jul 22 '15 at 07:20
1

Try `import classR` instead. – Anand S Kumar Jul 22 '15 at 07:20

Circular dependency in Python how to solve it?

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