diff --git a/dev/codegen.py b/dev/codegen.py
index 85538ce..41627fd 100755
--- a/dev/codegen.py
+++ b/dev/codegen.py
@@ -18,6 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # ==========================================================================
+from __future__ import print_function
 import os
 import sys
 import fileinput
@@ -274,13 +275,13 @@ def add_ctool(name, tokens, baseclass):
         if 'libctools_la_LIBADD' in line.replace(' ', ''):
             last = line[-2]
             line = line.replace(line, line+insertline2+last+'\n')
-        print(line),
+        print(line,end=''),
 
     # Update Python module
     for line in fileinput.FileInput('pyext/ctools/tools.i',inplace=1):
         if '%include "ctbin.i"' in line:
             print('%%include "%s.i"' % (name))
-        print(line),
+        print(line,end=''),
 
     # Update unit test
     for line in fileinput.FileInput('test/test_python_ctools.py',inplace=1):
@@ -288,25 +289,25 @@ def add_ctool(name, tokens, baseclass):
             print('import test_%s' % (name))
         elif 'test_ctbin.Test()' in line:
             print('             test_%s.Test(),' % (name))
-        print(line),
+        print(line,end=''),
 
     # Update export of unit test
     for line in fileinput.FileInput('pyext/Makefile.am',inplace=1):
         if '$(top_srcdir)/test/test_ctbin.py' in line:
             print('              $(top_srcdir)/test/test_%s.py \\' % (name))
-        print(line),
+        print(line,end=''),
 
     # Update configure.ac
     for line in fileinput.FileInput('configure.ac',inplace=1):
         if 'src/ctbin/Makefile' in line:
             print('                 src/%s/Makefile' % (name))
-        print(line),
+        print(line,end=''),
 
     # Update reference manual index file
     for line in fileinput.FileInput('doc/source/users/reference_manual/index.rst',inplace=1):
         if 'ctbin --- Generates counts cube <ctbin>' in line:
             print('   %s --- ToDo: Describe what tool is doing <%s>' % (name, name))
-        print(line),
+        print(line,end=''),
 
     # Return
     return
@@ -355,7 +356,7 @@ def add_cscript(name, tokens, baseclass):
             print('    "%s",' % (name))
         elif 'from cscripts.csworkflow    import csworkflow' in line:
             print('from cscripts.%s    import %s' % (name, name))
-        print(line),
+        print(line,end=''),
 
     # Update cscripts/Makefile.am file
     for line in fileinput.FileInput('cscripts/Makefile.am',inplace=1):
@@ -367,7 +368,7 @@ def add_cscript(name, tokens, baseclass):
             print('              %s \\' % (name))
         elif '$(top_srcdir)/test/test_csworkflow.py' in line:
             print('              $(top_srcdir)/test/test_%s.py \\' % (name))
-        print(line),
+        print(line,end=''),
 
     # Update test/test_python_cscripts.py file
     for line in fileinput.FileInput('test/test_python_cscripts.py',inplace=1):
@@ -375,13 +376,13 @@ def add_cscript(name, tokens, baseclass):
             print('import test_%s' % (name))
         elif 'test_csworkflow.Test()' in line:
             print('             test_%s.Test(),' % (name))
-        print(line),
+        print(line,end=''),
 
     # Update reference manual index file
     for line in fileinput.FileInput('doc/source/users/reference_manual/index.rst',inplace=1):
         if 'csbkgmodel --- Generates background model for 3D analysis <csbkgmodel>' in line:
             print('   %s --- ToDo: Describe what script is doing <%s>' % (name, name))
-        print(line),
+        print(line,end=''),
 
     # Return
     return