diff --git a/get_modules.sh b/get_modules.sh
index 993008486ede3ad3dbb835d9c1949c175ca0328a..3f13caf27b577186df4f6809329fab4ded5c4f90 100755
--- a/get_modules.sh
+++ b/get_modules.sh
@@ -1,4 +1,4 @@
-# !/bin/bash
+#!/bin/bash
 
 PWD="/home/easybuild/git/it4i-modules"
 cd $PWD
@@ -66,6 +66,6 @@ else
    ./modules.py > phi.md
 fi
 
-DATE=`date -R`
+DATE=$(date -R)
 git diff --exit-code || git commit -am "$DATE"
 git push origin master
diff --git a/modules.py b/modules.py
index 9b6d48c9c8b6da9722926680f43e131e80eae770..cfe785b413d667f6fc1fc189a03026156e42a024 100755
--- a/modules.py
+++ b/modules.py
@@ -2,86 +2,76 @@
 
 import os
 import re
-import socket
 
-def software_list(class_path):
+def get_software_list(path):
     """List software from given module class"""
-    os.chdir(class_path)
+    os.chdir(path)
     software_list = next(os.walk('.'))[1]
     # In case that there is 'all' module
     if 'all' in software_list:
         software_list.remove('all')
     return software_list
 
-
-def get_software_versions(software_path):
+def get_software_versions(path):
     """List available versions of software"""
-    os.chdir(software_path)
+    os.chdir(path)
     return next(os.walk('.'))[2]
 
 def get_module_description(module_path):
     """Return software homepage URL and description"""
     url = ""
-    url_position = 0
     description = "Old module, description not available."
-    with open(module_path) as f:
-        content = f.read()
+    with open(module_path) as _file:
+        content = _file.read()
     if module_path.endswith('lua'):
-        data = re.search(r"whatis\((\[\[|\[==\[)Description: ?([\s\S]+)(\]\]|\]==\])\)\s+whatis\((\[\[|\[==\[)Homepage:\s(\S+)(\]\]|\]==\])\)",
-                content, re.DOTALL)
-        url_position = 5
+        data = re.search(r"whatis\((\[\[|\[==\[)Description: ?([\s\S]+)(?>\]\]|\]==\])\)\s+whatis\((?>\[\[|\[==\[)Homepage:\s(\S+)(?>\]\]|\]==\])\)",
+                         content, re.DOTALL)
     else:
         data = re.search(r"module-whatis\s{(Description: )?(.+)\s-\sHomepage:\s(\S+)}",
-                content, re.DOTALL)
-        url_position = 3
+                         content, re.DOTALL)
 
     try:
         description = data.group(2)
-        url = data.group(url_position)
+        url = data.group(3)
     except AttributeError:
         pass
     return url, description
 
 if __name__ == "__main__":
     HTML_SOURCE_DATA = {}
-    subdirs = os.environ['MODULEPATH'].split(':')
+    SUBDIRS = os.environ['MODULEPATH'].split(':')
 
-    if os.getenv('CLUSTER')=="ANSELM":
-       subdirs.remove("/apps/modules/init")
-       subdirs.remove("/apps/modules/environments")
-       subdirs.remove("/apps/modules/engineering")
-       subdirs.remove("/apps/modules/libraries")
-       subdirs.remove("/apps/modules/omics")
-       subdirs.remove("/apps/modules/prace")
+    if os.getenv('CLUSTER') == "ANSELM":
+        SUBDIRS.remove("/apps/modules/init")
+        SUBDIRS.remove("/apps/modules/environments")
+        SUBDIRS.remove("/apps/modules/engineering")
+        SUBDIRS.remove("/apps/modules/libraries")
+        SUBDIRS.remove("/apps/modules/omics")
+        SUBDIRS.remove("/apps/modules/prace")
 
-    print "# Available Modules"
-    for dir in sorted(subdirs):
-        available_software = software_list(dir)
-        print "\n## %s\n" % os.path.basename(dir).title()
+    for subdir in sorted(SUBDIRS, key=lambda s: s.lower()):
+        available_software = get_software_list(subdir)
+        print "\n## %s\n" % os.path.basename(subdir).title()
         print "| Module | Description |"
         print "| ------ | ----------- |"
-        HTML_SOURCE_DATA[dir] = {}
+        HTML_SOURCE_DATA[subdir] = {}
         for soft in sorted(available_software, key=str.lower):
-            software_path = os.path.join(dir, soft)
-            if os.getenv('CLUSTER')!="ANSELM":
-              software_path = software_path.replace(os.path.basename(dir)+'/', 'all/')
+            software_path = os.path.join(subdir, soft)
+            if os.getenv('CLUSTER') != "ANSELM":
+                software_path = software_path.replace(os.path.basename(subdir)+'/', 'all/')
             software_versions = get_software_versions(software_path)
-            while ".common" in software_versions: software_versions.remove(".common")
-            while ".common-6" in software_versions: software_versions.remove(".common-6")
-            while ".version" in software_versions: software_versions.remove(".version")
+            software_versions = [ver for ver in software_versions if not ver[0] == '.']
 
             if not software_versions:
                 continue
             first_module_path = os.path.join(software_path, software_versions[0])
             software_url, software_description = get_module_description(first_module_path)
-            HTML_SOURCE_DATA[dir][soft] = {'versions': [],
+            HTML_SOURCE_DATA[subdir][soft] = {'versions': [],
                                            'url': software_url,
                                            'description': software_description}
             for version in software_versions:
-                HTML_SOURCE_DATA[dir][soft]['versions'].append(version)
-            if software_url=="":
-              print "| %s | %s |" % (soft," ".join(software_description.split()))
-            elif software_url=="(none)":
-              print "| %s | %s |" % (soft," ".join(software_description.split()))
+                HTML_SOURCE_DATA[subdir][soft]['versions'].append(version)
+            if software_url in ["", "(none)"]:
+                print "| %s | %s |" % (soft, " ".join(software_description.split()))
             else:
-              print "| [%s](%s) | %s |" % (soft,software_url," ".join(software_description.split()))
+                print "| [%s](%s) | %s |" % (soft, software_url, " ".join(software_description.split()))