Compatibility with pypdf 3+

--HG-- branch : 16.0

models/redner_report.py

@@ -36,5 +36,5 @@
 
 logger = logging.getLogger(__name__)
 
-_pypdf2 = True
+_pypdf2 = False
 try:
@@ -40,3 +40,3 @@
 try:
-    from PyPDF2 import PdfFileReader, PdfFileWriter
+    from pypdf import PdfWriter
 except ImportError:
@@ -42,3 +42,3 @@
 except ImportError:
-    from pypdf import PdfWriter
+    from PyPDF2 import PdfFileReader, PdfFileWriter
 
@@ -44,5 +44,5 @@
 
-    _pypdf2 = False
+    _pypdf2 = True
 
 
 class RednerReport(models.TransientModel):