Update pigeonhole_sort.py

Author: MaximSmolskiy

sorts/pigeonhole_sort.py

@@ -12,10 +12,9 @@ def pigeonhole_sort(a):
     True
 
     >>> pigeonhole_sort([])
-    None
     """
-    # if not a:
-    #    return  # this handles empty list
+    if not a:
+        return
     # size of range of values in the list (ie, number of pigeonholes we need)
 
     min_val = min(a)  # min() finds the minimum value
@@ -43,7 +42,7 @@ def pigeonhole_sort(a):
 def main():
     a = [8, 3, 2, 7, 4, 6, 8]
     pigeonhole_sort(a)
-    print("Sorted order is:", " ".join(map(str, a)))  # it converts integer into string
+    print("Sorted order is:", *a)
 
 
 if __name__ == "__main__":