ASV: add benchmarks for concatenating and appending of CategoricalIndex (GH38149) (#39493)

Author: avinashpancham

asv_bench/benchmarks/categoricals.py

@@ -118,12 +118,29 @@ def setup(self):
  self.a = pd.Categorical(list("aabbcd") * N)
  self.b = pd.Categorical(list("bbcdjk") * N)
 
+ self.idx_a = pd.CategoricalIndex(range(N), range(N))
+ self.idx_b = pd.CategoricalIndex(range(N + 1), range(N + 1))
+ self.df_a = pd.DataFrame(range(N), columns=["a"], index=self.idx_a)
+ self.df_b = pd.DataFrame(range(N + 1), columns=["a"], index=self.idx_b)
+
  def time_concat(self):
  pd.concat([self.s, self.s])
 
  def time_union(self):
  union_categoricals([self.a, self.b])
 
+ def time_append_overlapping_index(self):
+ self.idx_a.append(self.idx_a)
+
+ def time_append_non_overlapping_index(self):
+ self.idx_a.append(self.idx_b)
+
+ def time_concat_overlapping_index(self):
+ pd.concat([self.df_a, self.df_a])
+
+ def time_concat_non_overlapping_index(self):
+ pd.concat([self.df_a, self.df_b])
+
 
 class ValueCounts: