diff --git a/sorts/pigeonhole_sort.py b/sorts/pigeonhole_sort.py
index bfa9bb11b8a6..7fbc6188cfb4 100644
--- a/sorts/pigeonhole_sort.py
+++ b/sorts/pigeonhole_sort.py
@@ -10,7 +10,11 @@ def pigeonhole_sort(a):
     >>> pigeonhole_sort(a)  # a destructive sort
     >>> a == b
     True
+
+    >>> pigeonhole_sort([])
     """
+    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
@@ -38,7 +42,7 @@ def pigeonhole_sort(a):
 def main():
     a = [8, 3, 2, 7, 4, 6, 8]
     pigeonhole_sort(a)
-    print("Sorted order is:", " ".join(a))
+    print("Sorted order is:", *a)
 
 
 if __name__ == "__main__":