@@ -77,7 +77,7 @@ def local_density(max_id, distances, dc, guass=True, cutoff=False):
7777 Returns:
7878 local density vector that index is the point index that start from 1
7979 """
80- assert guass and cutoff == False and guass or cutoff == True
80+ assert guass and cutoff is False and guass or cutoff is True
8181 logger .info ("PROGRESS: compute local density" )
8282 guass_func = lambda dij , dc : math .exp (- (dij / dc ) ** 2 )
8383 cutoff_func = lambda dij , dc : 1 if dij < dc else 0
@@ -137,9 +137,9 @@ def local_density(self, distances, max_dis, min_dis, max_id, dc=None, auto_selec
137137 Returns:
138138 local density vector, dc
139139 """
140- assert not (dc != None and auto_select_dc )
140+ assert not (dc is not None and auto_select_dc )
141141
142- if dc == None :
142+ if dc is None :
143143 dc = select_dc (max_id , max_dis , min_dis , distances , auto = auto_select_dc )
144144 rho = local_density (max_id , distances , dc )
145145 return rho , dc
@@ -163,7 +163,7 @@ def cluster(self, distances, max_dis, min_dis, max_id, density_threshold, distan
163163 Returns:
164164 local density vector, min_distance vector, nearest neighbor vector
165165 """
166- assert not (dc != None and auto_select_dc )
166+ assert not (dc is not None and auto_select_dc )
167167 rho , dc = self .local_density (distances , max_dis , min_dis , max_id , dc = dc , auto_select_dc = auto_select_dc )
168168 delta , nneigh = min_distance (max_id , max_dis , distances , rho )
169169 logger .info ("PROGRESS: start cluster" )
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