Error in .filter_pathways method

[abearab]

I'm getting error when I try to filter pathways by size.

msigdb_c5_gobp.filter_pathways(min_size=50,max_size=150)

AttributeError: 'GeneSets' object has no attribute 'pathway_sizes'

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I could make it work by running msigdb_c5_gobp._calculate_pathway_sizes() prior to that but it would be nice to add this line to the beginning of .filter_pathways method.

[abearab]

Also number of reported pathways and genes is not changing after filtering (which should change, right?). You may want to correct that, too.

[abearab]

Also, I can not smoothly feed modified GeneSets object to PAGE.run.

AttributeError: 'PAGE' object has no attribute 'exp_bins'

To my understanding this part of code is excluding 'exp_bins' so this need to be added to PAGE object after modifying GeneSets object.

pypage/pypage/page.py

Lines 156 to 160 in 809dd88

	if not self.expression.modified and not self.ontology.modified:
	self._intersect_genes()
	self._subset_matrices()
	self._set_sizes()

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I'm setting msigdb_c5_gobp.modified = False for now :-)