diff --git a/envfiles/python/2.7 b/envfiles/python/2.7
index 9c2080dd825a3ada42f7509a89e78fde7c66bb95..38596aea54cbdea9533c83fa0bb14a5eb09ce928 100644
--- a/envfiles/python/2.7
+++ b/envfiles/python/2.7
@@ -1,6 +1,7 @@
 #%Module######################################################################
 #
 # python2.7 modulefile 20160115
+# update: 20210616
 #
 
 proc ModulesHelp { } {
@@ -14,16 +15,16 @@ puts stderr "is added to PATH."
 
 set is_module_rm [module-info mode remove]
 
-set PYTHON_LEVEL 2.7
-set PYTHON_CURPATH /opt/python
+set PYTHON_LVL 2.7
+set PYTHON_CURPATH /usr/lib/python$PYTHON_LVL
 set PYTHON_SHARE_LIBS /share/apps/lib/python
-setenv PYTHONPATH  $PYTHON_CURPATH/lib:$PYTHON_SHARE_LIBS/lib/python$PYTHON_LEVEL/site-packages:$PYTHON_CURPATH/lib/python$PYTHON_LEVEL/site-packages
+setenv PYTHONPATH  $PYTHON_CURPATH:$PYTHON_CURPATH/plat-x86_64-linux-gnu:$PYTHON_CURPATH/lib-tk:$PYTHON_CURPATH/lib-old:$PYTHON_CURPATH/lib-dynload:/usr/local/lib/python$PYTHON_LVL/dist-packages:$PYTHON_CURPATH/dist-packages:PYTHON_CURPATH/dist-packages/gtk-2.0:$PYTHON_SHARE_LIBS/lib/python$PYTHON_LEVEL/site-packages
 
 unset-alias python
 set-alias python python2.7
 
-prepend-path PATH       $PYTHON_CURPATH/bin/:$PYTHON_SHARE_LIBS/bin
-prepend-path LD_LIBRARY_PATH  $PYTHON_CURPATH/lib/python$PYTHON_LEVEL
-prepend-path MANPATH      $PYTHON_CURPATH/share/man
+#prepend-path PATH       $PYTHON_CURPATH/bin/:$PYTHON_SHARE_LIBS/bin
+#prepend-path LD_LIBRARY_PATH  $PYTHON_CURPATH/lib/python$PYTHON_LEVEL
+#prepend-path MANPATH      $PYTHON_CURPATH/share/man
 
 append-path  PE_PRODUCT_LIST  PYTHON2.7
diff --git a/envfiles/python/3 b/envfiles/python/3
deleted file mode 100644
index 2d32ff3bd8c3056e7c0f051c47a234297c014b78..0000000000000000000000000000000000000000
--- a/envfiles/python/3
+++ /dev/null
@@ -1,23 +0,0 @@
-#%Module######################################################################
-#
-# python3 system modulefile 20200303
-#
-
-proc ModulesHelp { } {
-puts stderr "This modulefile defines python3 system version"
-puts stderr "as the default python version."
-puts stderr "The program python3"
-puts stderr "is added to PATH."
-puts stderr "Please note that this is just a generic python3 version"
-puts stderr "and it might change at every system upgrade."
-puts stderr "Otherwise, please use pyenv."
-}
-
-
-set is_module_rm [module-info mode remove]
-
-set PYTHON_LEVEL 3
-
-append-path  PE_PRODUCT_LIST  PYTHON.$PYTHON_LEVEL
-unset-alias python3
-set-alias python {python3}
diff --git a/envfiles/python/3 b/envfiles/python/3
new file mode 120000
index 0000000000000000000000000000000000000000..3faf9b8ec3935d73c5a28d8378fbceabc7dec712
--- /dev/null
+++ b/envfiles/python/3
@@ -0,0 +1 @@
+3.6
\ No newline at end of file
diff --git a/envfiles/python/3.6 b/envfiles/python/3.6
new file mode 100644
index 0000000000000000000000000000000000000000..ef6fe1f3afbae07da2dd8141c72ec19add9c2867
--- /dev/null
+++ b/envfiles/python/3.6
@@ -0,0 +1,22 @@
+#%Module######################################################################
+#
+# python3 system modulefile 20200303
+#
+
+proc ModulesHelp { } {
+puts stderr "This modulefile do nothing."
+puts stderr "The program python3.6"
+puts stderr "is (already) added to PATH."
+puts stderr "Please note that this is just a generic python3 version"
+puts stderr "and it might change at every system upgrade."
+puts stderr "Otherwise, please use pyenv+virtualenv, conda or guix."
+}
+
+
+set is_module_rm [module-info mode remove]
+
+set PYTHON_LEVEL 3.6
+
+append-path  PE_PRODUCT_LIST  PYTHON.$PYTHON_LEVEL
+unset-alias python3
+set-alias python {python3}