diff --git a/test/lib_python/in.simple-001.py b/test/lib_python/in.simple-001.py
index a0133cb450..9288e7de4c 100755
--- a/test/lib_python/in.simple-001.py
+++ b/test/lib_python/in.simple-001.py
@@ -1,5 +1,7 @@
 #!/usr/bin/env python -i
 
+from __future__ import print_function
+
 infile = 'in.simple'
 me = 0
 
@@ -19,8 +21,8 @@ lmp.scatter_atoms("x",1,3,x)
 lmp.command("run 1");
 
 f = lmp.extract_atom("f",3)
-print "Force on 1 atom via extract_atom: ",f[0][0]
+print ("Force on 1 atom via extract_atom: ",f[0][0])
 
 fx = lmp.extract_variable("fx","all",1)
-print "Force on 1 atom via extract_variable:",fx[0]
+print ("Force on 1 atom via extract_variable:",fx[0])
 
diff --git a/test/lib_python/in.simple-002.py b/test/lib_python/in.simple-002.py
index b62cf20691..dce6fde5f8 100755
--- a/test/lib_python/in.simple-002.py
+++ b/test/lib_python/in.simple-002.py
@@ -6,6 +6,7 @@
 # Syntax:  simple.py in.lammps
 #          in.lammps = LAMMPS input script
 
+from __future__ import print_function
 import sys
 
 infile = 'in.simple'
@@ -27,8 +28,8 @@ lmp.scatter_atoms("x",1,3,x)
 lmp.command("run 1");
 
 f = lmp.extract_atom("f",3)
-print "Force on 1 atom via extract_atom: ",f[0][0]
+print ("Force on 1 atom via extract_atom: ",f[0][0])
 
 fx = lmp.extract_variable("fx","all",1)
-print "Force on 1 atom via extract_variable:",fx[0]
+print ("Force on 1 atom via extract_variable:",fx[0])