Creating two objects of the same classes from different imports made them look as different classes

Question

I have a the following file in Python:

• SB/__init__.py

  from .interval import *
  

• SB/interval.py

  class Interval:
      blablabla  # Do stuff with intervals
      def __eq__(self, other):
          # Do comparison
      def __lt__(self, other):
          # Do comparison
      def __le__(self, other):
          # Do comparison
      def __gt__(self, other):
          # Do comparison
      def __ge__(self, other):
          # Do comparison
  
  def interval_from_file(filename):
      blablabla  # Read the file, etc
      result = []
      for l in lines:
          fields = l.split('\t')
          ... # Validate the fields
          result.append(Interval(fields))
       return result
  

If I do import SB from an IPython shell or Jupyter and I load some data with SB.interval_from_file, I get a list of Interval objects. But, if I then manually create an Interval object with SB.Interval, I cannot compare that object with any other from the list. I get instead

TypeError: '<' not supported between instances of 'Interval' and 'Interval'

Any idea what's going on?

edit: If I print the type of the objects, the ones in the list (so from SB.interval_from_file have the type SB.interval.Interval whereas the object created in the IPython shell with SB.Interval is of type interval.Interval. Is that behavior expected?

Answer 1

Maybe your pythonpath is including both SB and its parent directory.

Make sure you include just the appropriate directory.