diff --git a/TrivialFormulator.py b/TrivialFormulator.py
index 788d95da..5cadf929 100644
--- a/TrivialFormulator.py
+++ b/TrivialFormulator.py
@@ -9,7 +9,7 @@
    v 1.2
 """
 
-from types import *
+from types import BooleanType, StringType
 
 
 def TrivialFormulator(
@@ -44,7 +44,7 @@ def TrivialFormulator(
                   -1 cancel (if cancelbutton specified)
          HTML form: html string (form to insert in your web page)
          values: None or, when the form is submitted and correctly filled,
-                 a dictionnary with the requeted values.                 
+                 a dictionnary with the requeted values.
     formdescription: sequence [ (field, description), ... ]
         where description is a dict with following (optional) keys:
           default    : default value for this field ('')
@@ -63,7 +63,7 @@ def TrivialFormulator(
           withcheckbox: if true, place a checkbox at the left of the input
                         elem. Checked items will be returned in 'tf-checked'
           attributes: a liste of strings to put in the HTML form element
-          template: HTML template for element 
+          template: HTML template for element
           HTML elements:
              input_type : 'text', 'textarea', 'password',
                           'radio', 'menu', 'checkbox',
@@ -368,9 +368,6 @@ class TF:
         idx = 0
         for idx in range(len(self.formdescription)):
             (field, descr) = self.formdescription[idx]
-            nextitemname = None
-            if idx < len(self.formdescription) - 2:
-                nextitemname = self.formdescription[idx + 1][0]
             if descr.get("readonly", False):
                 R.append(self._ReadOnlyElement(field, descr))
                 continue
@@ -682,7 +679,6 @@ class TF:
         "Generate HTML for an element, read-only"
         R = []
         title = descr.get("title", field.capitalize())
-        withcheckbox = descr.get("withcheckbox", False)
         input_type = descr.get("input_type", "text")
         klass = descr.get("cssclass", "")
         klass = " " + klass
diff --git a/VERSION.py b/VERSION.py
index 68853baa..8e8a40a4 100644
--- a/VERSION.py
+++ b/VERSION.py
@@ -1,11 +1,15 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "7.21"
+SCOVERSION = "7.22"
 
 SCONAME = "ScoDoc"
 
 SCONEWS = """
+<h4>Année 2021</h4>
+<ul>
+<li>Modernisation du code Python.</li>
+</ul>
 <h4>Année 2020</h4>
 <ul>
 <li>Corrections d'erreurs, améliorations saise absences< et affichage bulletins</li>
diff --git a/notesdb.py b/notesdb.py
index fb073abf..5911978c 100644
--- a/notesdb.py
+++ b/notesdb.py
@@ -8,8 +8,8 @@ import psycopg2.pool
 import psycopg2.extras
 import thread
 from notes_log import log
-from sco_exceptions import *
-from types import *
+from sco_exceptions import ScoException, ScoValueError, NoteProcessError
+from types import StringType
 from cgi import escape
 import datetime
 
@@ -175,7 +175,7 @@ def DBSelectArgs(
     cond = ""
     i = 1
     cl = []
-    for (aux_tab, aux_id) in aux_tables:
+    for (_, aux_id) in aux_tables:
         cl.append("T0.%s = T%d.%s" % (id_name, i, aux_id))
         i = i + 1
     cond += " and ".join(cl)
diff --git a/pe_settag.py b/pe_settag.py
index 38bfc566..7d46b7c6 100644
--- a/pe_settag.py
+++ b/pe_settag.py
@@ -36,7 +36,7 @@ Created on Fri Sep  9 09:15:05 2016
 @author: barasc
 """
 
-from pe_tools import *
+from pe_tools import pe_print, PE_DEBUG
 
 import pe_tagtable
 import pe_semestretag
diff --git a/pe_view.py b/pe_view.py
index a5dca1fd..39ee9758 100644
--- a/pe_view.py
+++ b/pe_view.py
@@ -44,7 +44,7 @@ from gen_tables import GenTable
 import sco_codes_parcours
 
 import pe_tools
-from pe_tools import *
+from pe_tools import PE_LATEX_ENCODING
 import pe_tagtable
 import pe_semestretag
 import pe_settag
diff --git a/sco_edit_module.py b/sco_edit_module.py
index a899cc0f..899f04f0 100644
--- a/sco_edit_module.py
+++ b/sco_edit_module.py
@@ -172,7 +172,7 @@ def module_create(context, matiere_id=None, REQUEST=None):
     if tf[0] == 0:
         return "\n".join(H) + tf[1] + context.sco_footer(REQUEST)
     else:
-        moduleid = context.do_module_create(tf[2], REQUEST)
+        context.do_module_create(tf[2], REQUEST)
         return REQUEST.RESPONSE.redirect(
             REQUEST.URL1 + "/ue_list?formation_id=" + UE["formation_id"]
         )
@@ -397,7 +397,6 @@ def edit_module_set_code_apogee(context, id=None, value=None, REQUEST=None):
     modules = context.do_module_list(args={"module_id": module_id})
     if not modules:
         return "module invalide"  # shoud not occur
-    module = modules[0]
 
     context.do_module_edit({"module_id": module_id, "code_apogee": value})
     if not value:
diff --git a/sco_parcours_dut.py b/sco_parcours_dut.py
index 3bdaca8e..952ff6be 100644
--- a/sco_parcours_dut.py
+++ b/sco_parcours_dut.py
@@ -27,11 +27,37 @@
 
 """Semestres: gestion parcours DUT (Arreté du 13 août 2005)
 """
+from types import FloatType
+
+import sco_utils as scu
 import notesdb as ndb
 from notes_log import log
 from scolog import logdb
 import sco_formsemestre
-from sco_codes_parcours import *
+
+from sco_codes_parcours import (
+    CMP,
+    ADC,
+    ADJ,
+    ADM,
+    AJ,
+    ATT,
+    NO_SEMESTRE_ID,
+    BUG,
+    NEXT,
+    NEXT2,
+    NEXT_OR_NEXT2,
+    REO,
+    REDOANNEE,
+    REDOSEM,
+    RA_OR_NEXT,
+    RA_OR_RS,
+    RS_OR_NEXT,
+    CODES_SEM_VALIDES,
+    NOTES_BARRE_GEN_COMPENSATION,
+    code_semestre_attente,
+    code_semestre_validant,
+)
 from dutrules import DUTRules  # regles generees a partir du CSV
 from sco_exceptions import ScoValueError
 
@@ -166,7 +192,7 @@ class SituationEtudParcoursGeneric:
                 if rule.conclusion[5] == BUG:
                     log("get_possible_choices: inconsistency: state=%s" % str(state))
                 #
-                valid_semestre = code_semestre_validant(rule.conclusion[0])
+                # valid_semestre = code_semestre_validant(rule.conclusion[0])
                 choices.append(
                     DecisionSem(
                         code_etat=rule.conclusion[0],
@@ -391,7 +417,7 @@ class SituationEtudParcoursGeneric:
         )
         self.moy_gen = self.nt.get_etud_moy_gen(self.etudid)
         self.barre_moy_ok = (type(self.moy_gen) == FloatType) and (
-            self.moy_gen >= (self.parcours.BARRE_MOY - NOTES_TOLERANCE)
+            self.moy_gen >= (self.parcours.BARRE_MOY - scu.NOTES_TOLERANCE)
         )
         # conserve etat UEs
         ue_ids = [
diff --git a/sco_pvpdf.py b/sco_pvpdf.py
index 2a3d50bc..391e8c05 100644
--- a/sco_pvpdf.py
+++ b/sco_pvpdf.py
@@ -29,24 +29,37 @@
 """
 import os
 import types
+import re
+import cStringIO
+import reportlab
+from reportlab.lib.units import cm, mm
+from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY
+from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Frame, PageBreak
+from reportlab.platypus import Table, TableStyle, Image, KeepInFrame
+from reportlab.platypus.flowables import Flowable
+from reportlab.platypus.doctemplate import PageTemplate, BaseDocTemplate
+from reportlab.lib.pagesizes import A4, landscape
+from reportlab.lib import styles
+from reportlab.lib.colors import Color
 
-from sco_pdf import *
 import sco_utils as scu
+import sco_pdf
+from sco_pdf import SU
 import sco_formsemestre
 import sco_pvjury
 import sco_codes_parcours
 from sco_pdf import PDFLOCK
 import sco_preferences
 import sco_bulletins_pdf
+import VERSION
 
+LOGO_FOOTER_ASPECT = scu.CONFIG.LOGO_FOOTER_ASPECT  # XXX A AUTOMATISER
+LOGO_FOOTER_HEIGHT = scu.CONFIG.LOGO_FOOTER_HEIGHT * mm
+LOGO_FOOTER_WIDTH = LOGO_FOOTER_HEIGHT * scu.CONFIG.LOGO_FOOTER_ASPECT
 
-LOGO_FOOTER_ASPECT = CONFIG.LOGO_FOOTER_ASPECT  # XXX A AUTOMATISER
-LOGO_FOOTER_HEIGHT = CONFIG.LOGO_FOOTER_HEIGHT * mm
-LOGO_FOOTER_WIDTH = LOGO_FOOTER_HEIGHT * CONFIG.LOGO_FOOTER_ASPECT
-
-LOGO_HEADER_ASPECT = CONFIG.LOGO_HEADER_ASPECT  # XXX logo IUTV (A AUTOMATISER)
-LOGO_HEADER_HEIGHT = CONFIG.LOGO_HEADER_HEIGHT * mm
-LOGO_HEADER_WIDTH = LOGO_HEADER_HEIGHT * CONFIG.LOGO_HEADER_ASPECT
+LOGO_HEADER_ASPECT = scu.CONFIG.LOGO_HEADER_ASPECT  # XXX logo IUTV (A AUTOMATISER)
+LOGO_HEADER_HEIGHT = scu.CONFIG.LOGO_HEADER_HEIGHT * mm
+LOGO_HEADER_WIDTH = LOGO_HEADER_HEIGHT * scu.CONFIG.LOGO_HEADER_ASPECT
 
 
 def pageFooter(canvas, doc, logo, preferences, with_page_numbers=True):
@@ -76,7 +89,7 @@ def pageFooter(canvas, doc, logo, preferences, with_page_numbers=True):
     RightFootStyle.fontSize = preferences["SCOLAR_FONT_SIZE_FOOT"]
     RightFootStyle.alignment = TA_RIGHT
 
-    p = makeParas(
+    p = sco_pdf.makeParas(
         """<para>%s</para><para>%s</para>"""
         % (preferences["INSTITUTION_NAME"], preferences["INSTITUTION_ADDRESS"]),
         LeftFootStyle,
@@ -186,12 +199,12 @@ class CourrierIndividuelTemplate(PageTemplate):
         self.background_image_filename = None
         self.logo_footer = None
         self.logo_header = None
-        # Search logos in dept specific dir, then in global config dir
+        # Search logos in dept specific dir, then in global scu.CONFIG dir
         for image_dir in (
-            SCODOC_LOGOS_DIR + "/logos_" + context.DeptId() + "/",
-            SCODOC_LOGOS_DIR + "/",  # global logos
+            scu.SCODOC_LOGOS_DIR + "/logos_" + context.DeptId() + "/",
+            scu.SCODOC_LOGOS_DIR + "/",  # global logos
         ):
-            for suffix in LOGOS_IMAGES_ALLOWED_TYPES:
+            for suffix in scu.LOGOS_IMAGES_ALLOWED_TYPES:
                 if template_name == "PVJuryTemplate":
                     fn = image_dir + "/pvjury_background" + "." + suffix
                 else:
@@ -377,7 +390,7 @@ def pdf_lettres_individuelles(
         CourrierIndividuelTemplate(
             document,
             context=context,
-            author="%s %s (E. Viennet)" % (SCONAME, SCOVERSION),
+            author="%s %s (E. Viennet)" % (VERSION.SCONAME, VERSION.SCOVERSION),
             title="Lettres décision %s" % sem["titreannee"],
             subject="Décision jury",
             margins=margins,
@@ -514,7 +527,7 @@ def pdf_lettre_individuelle(sem, decision, etud, params, signature=None, context
             % params
         )
         sig = _simulate_br(sig, '<para leftindent="%(htab1)s">')
-        objects += makeParas(
+        objects += sco_pdf.makeParas(
             (
                 """<para leftindent="%(htab1)s" spaceBefore="25mm">"""
                 + sig
@@ -529,7 +542,7 @@ def pdf_lettre_individuelle(sem, decision, etud, params, signature=None, context
             % params
         )
         sig = _simulate_br(sig, '<para leftindent="%(htab1)s">')
-        objects += makeParas(
+        objects += sco_pdf.makeParas(
             (
                 """<para leftindent="%(htab1)s" spaceBefore="25mm">"""
                 + sig
@@ -650,7 +663,7 @@ def pvjury_pdf(
         PVTemplate(
             document,
             context=context,
-            author="%s %s (E. Viennet)" % (SCONAME, SCOVERSION),
+            author="%s %s (E. Viennet)" % (VERSION.SCONAME, VERSION.SCOVERSION),
             title=SU("PV du jury de %s" % sem["titre_num"]),
             subject="PV jury",
             preferences=context.get_preferences(formsemestre_id),
@@ -683,7 +696,7 @@ def _pvjury_pdf_type(
 
     sem = dpv["formsemestre"]
     formsemestre_id = sem["formsemestre_id"]
-    titre_jury, titre_court_jury = _descr_jury(sem, diplome)
+    titre_jury, _ = _descr_jury(sem, diplome)
     titre_diplome = pv_title or dpv["formation"]["titre_officiel"]
     objects = []
 
@@ -708,7 +721,7 @@ def _pvjury_pdf_type(
     bulletStyle.spaceAfter = 5 * mm
 
     objects += [Spacer(0, 5 * mm)]
-    objects += makeParas(
+    objects += sco_pdf.makeParas(
         """
     <para align="center"><b>Procès-verbal de %s du département %s - Session unique %s</b></para>    
     """
@@ -720,7 +733,7 @@ def _pvjury_pdf_type(
         style,
     )
 
-    objects += makeParas(
+    objects += sco_pdf.makeParas(
         """
     <para align="center"><b><i>%s</i></b></para>
     """
@@ -729,20 +742,20 @@ def _pvjury_pdf_type(
     )
 
     if showTitle:
-        objects += makeParas(
+        objects += sco_pdf.makeParas(
             """<para align="center"><b>Semestre: %s</b></para>""" % sem["titre"], style
         )
     if context.get_preference("PV_TITLE_WITH_VDI", formsemestre_id):
-        objects += makeParas(
+        objects += sco_pdf.makeParas(
             """<para align="center">VDI et Code: %s</para>""" % (VDICode or ""), style
         )
 
     if date_jury:
-        objects += makeParas(
+        objects += sco_pdf.makeParas(
             """<para align="center">Jury tenu le %s</para>""" % date_jury, style
         )
 
-    objects += makeParas(
+    objects += sco_pdf.makeParas(
         "<para>"
         + context.get_preference("PV_INTRO", formsemestre_id)
         % {
@@ -757,7 +770,7 @@ def _pvjury_pdf_type(
         bulletStyle,
     )
 
-    objects += makeParas(
+    objects += sco_pdf.makeParas(
         """<para>Le jury propose les décisions suivantes :</para>""", style
     )
     objects += [Spacer(0, 4 * mm)]
@@ -809,7 +822,7 @@ def _pvjury_pdf_type(
     objects.append(Table(Pt, repeatRows=1, colWidths=widths, style=table_style))
 
     # Signature du directeur
-    objects += makeParas(
+    objects += sco_pdf.makeParas(
         """<para spaceBefore="10mm" align="right">
         Le %s, %s</para>"""
         % (
@@ -822,7 +835,7 @@ def _pvjury_pdf_type(
     # Légende des codes
     codes = sco_codes_parcours.CODES_EXPL.keys()
     codes.sort()
-    objects += makeParas(
+    objects += sco_pdf.makeParas(
         """<para spaceBefore="15mm" fontSize="14">
     <b>Codes utilisés :</b></para>""",
         style,
diff --git a/sco_trombino.py b/sco_trombino.py
index 416e84af..b529ea77 100644
--- a/sco_trombino.py
+++ b/sco_trombino.py
@@ -28,16 +28,27 @@
 """Photos: trombinoscopes
 """
 
-try:
-    from cStringIO import StringIO
-except:
-    from StringIO import StringIO
+from cStringIO import StringIO
 from zipfile import ZipFile, BadZipfile
 import xml
 import tempfile
+import reportlab
+from reportlab.lib.units import cm, mm
+from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY
+from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Frame, PageBreak
+from reportlab.platypus import Table, TableStyle, Image, KeepInFrame
+from reportlab.platypus.flowables import Flowable
+from reportlab.platypus.doctemplate import PageTemplate, BaseDocTemplate
+from reportlab.lib.pagesizes import A4, landscape
+from reportlab.lib import styles
+from reportlab.lib.colors import Color
+from reportlab.lib import colors
+from PIL import Image as PILImage
 
 from notes_log import log
 import sco_utils as scu
+import sco_pdf
+from sco_pdf import SU
 from sco_exceptions import ScoValueError
 from TrivialFormulator import TrivialFormulator
 import scolars
@@ -47,11 +58,8 @@ import sco_groups
 import sco_groups_view
 import sco_portal_apogee
 import htmlutils
-from sco_pdf import *
 import ImportScolars
 import sco_excel
-from reportlab.lib import colors
-from PIL import Image as PILImage
 
 
 def trombino(
@@ -368,7 +376,7 @@ def _trombino_pdf(context, groups_infos, REQUEST):
     # Build document
     document = BaseDocTemplate(report)
     document.addPageTemplates(
-        ScolarsPageTemplate(
+        sco_pdf.ScolarsPageTemplate(
             document,
             context=context,
             preferences=context.get_preferences(sem["formsemestre_id"]),
@@ -451,7 +459,7 @@ def _listeappel_photos_pdf(context, groups_infos, REQUEST):
     # Build document
     document = BaseDocTemplate(report)
     document.addPageTemplates(
-        ScolarsPageTemplate(
+        sco_pdf.ScolarsPageTemplate(
             document,
             context,
             preferences=context.get_preferences(sem["formsemestre_id"]),
diff --git a/scolog.py b/scolog.py
index 1ee852da..6ce6e542 100644
--- a/scolog.py
+++ b/scolog.py
@@ -26,8 +26,10 @@
 ##############################################################################
 
 
-import pdb, os, sys
-from sco_exceptions import *
+import pdb
+import os
+import sys
+
 import notesdb as ndb
 from notes_log import retreive_request