fix: fix some unnecessary conversion to int

Author: stevenhua0320

src/diffpy/srmise/dataclusters.py

@@ -221,7 +221,7 @@ def __next__(self):
                 self.lastcluster_idx = nearest_cluster[0] + 1
             self.clusters = np.insert(
                 self.clusters,
-                int(self.lastcluster_idx),
+                self.lastcluster_idx,
                 [test_idx, test_idx],
                 0,
             )
@@ -304,8 +304,8 @@ def find_nearest_cluster(self, idx):
         # Calculate which of the two nearest clusters is closer
         distances = np.array(
             [
-                self.x[idx] - self.x[self.clusters[int(near_idx) - 1, 1]],
-                self.x[idx] - self.x[self.clusters[int(near_idx), 0]],
+                self.x[idx] - self.x[self.clusters[near_idx - 1, 1]],
+                self.x[idx] - self.x[self.clusters[near_idx, 0]],
             ]
         )
         if distances[0] < np.abs(distances[1]):

src/diffpy/srmise/pdfpeakextraction.py

@@ -888,9 +888,9 @@ def writepwastr(self, comments):
             # Generate parameter labels from the baseline function's parameterdict
             blf = self.extracted.baseline.owner()
             if blf.npars > 0:
-                parlbl = blf.parameterdict.keys()
-                paridx = np.array(blf.parameterdict.values()).argsort()
-                lines.append("# " + " ".join([str(parlbl[i]) for i in paridx]))
+                parlbl = list(blf.parameterdict.keys())
+                paridx = np.array(list(blf.parameterdict.values())).argsort()
+                lines.append("# " + " ".join(str(parlbl[i]) for i in paridx))
                 blpars = " ".join([str(p) for p in self.extracted.baseline.pars])
             else:
                 blpars = "(no parameters)"