diff --git a/gen_tables.py b/gen_tables.py
index c1a84d1..fbd8309 100644
--- a/gen_tables.py
+++ b/gen_tables.py
@@ -693,7 +693,7 @@ class SeqGenTable:
 
     def excel(self):
         """Export des genTables dans un unique fichier excel avec plusieurs feuilles tagguées"""
-        book = sco_excel.Workbook()  # Le fichier xls en devenir
+        book = sco_excel.Workbook()  # pylint: disable=no-member
         for (_, gt) in self.genTables.items():
             gt.excel(wb=book)  # Ecrit dans un fichier excel
         return book.savetostr()
diff --git a/sco_pdf.py b/sco_pdf.py
index 0d14e79..23e5c7f 100644
--- a/sco_pdf.py
+++ b/sco_pdf.py
@@ -31,7 +31,10 @@
     Tout accès à ReportLab doit donc être précédé d'un PDFLOCK.acquire()
     et terminé par un PDFLOCK.release()
 """
-import time, cStringIO
+import time
+import cStringIO
+import re
+import os
 from types import StringType
 import unicodedata
 import traceback
@@ -49,9 +52,12 @@ from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY
 from reportlab.lib import styles
 from reportlab.lib.pagesizes import letter, A4, landscape
 
-from sco_utils import *
+import sco_utils as scu
+from sco_utils import CONFIG, SCO_ENCODING, SCODOC_LOGOS_DIR, LOGOS_IMAGES_ALLOWED_TYPES
 from notes_log import log
+from sco_exceptions import ScoGenError
 from SuppressAccents import suppression_diacritics
+import VERSION
 from VERSION import SCOVERSION, SCONAME
 
 PAGE_HEIGHT = defaultPageSize[1]
@@ -107,7 +113,7 @@ def makeParas(txt, style, suppress_empty=False):
         if suppress_empty:
             r = []
             for para in paras:
-                m = re.match("\s*<\s*para.*>\s*(.*)\s*<\s*/\s*para\s*>\s*", para)
+                m = re.match(r"\s*<\s*para.*>\s*(.*)\s*<\s*/\s*para\s*>\s*", para)
                 if not m:
                     r.append(para)  # not a paragraph, keep it
                 else:
@@ -229,7 +235,10 @@ class ScolarsPageTemplate(PageTemplate):
         # ---- Logo: a small image, positionned at top left of the page
         if self.logo is not None:
             # draws the logo if it exists
-            ((width, height), image) = self.logo
+            (  # pylint: disable=unpacking-non-sequence
+                (width, height),
+                image,
+            ) = self.logo
             canvas.drawImage(image, inch, doc.pagesize[1] - inch, width, height)
 
         # ---- Filigranne (texte en diagonal en haut a gauche de chaque page)