Hi everyone, I'm trying to import Odoo community with GitHub but I'm facing some troubles, when I import all the packages that's ok, but when I'm using the python odoo-bin command I have this error : 

Traceback (most recent call last):
  File "C:\Users\Utilisateur\Desktop\Odoo2\odoo\odoo-bin", line 5, in 
    import odoo
  File "C:\Users\Utilisateur\Desktop\Odoo2\odoo\odoo\__init__.py", line 115, in 
    from . import osv
  File "C:\Users\Utilisateur\Desktop\Odoo2\odoo\odoo\osv\__init__.py", line 4, in 
    from . import osv
  File "C:\Users\Utilisateur\Desktop\Odoo2\odoo\odoo\osv\osv.py", line 5, in 
    from ..models import Model, TransientModel, AbstractModel
  File "C:\Users\Utilisateur\Desktop\Odoo2\odoo\odoo\models.py", line 6379, in 
    collections\.Set\.register\(BaseModel\)
AttributeError: module 'collections' has no attribute 'Set'

How I'm supposed to solve that ?