Fix types in logic to compute help file name.
diff --git a/Tools/msi/msi.py b/Tools/msi/msi.py
index 8c8aae6..eba29cc 100644
--- a/Tools/msi/msi.py
+++ b/Tools/msi/msi.py
@@ -116,13 +116,13 @@
# Compute the name that Sphinx gives to the docfile
docfile = ""
-if micro:
- docfile = str(micro)
+if int(micro):
+ docfile = micro
if level < 0xf:
if level == 0xC:
- docfile = "rc%s" % (serial,)
+ docfile += "rc%s" % (serial,)
else:
- docfile = '%x%s' % (level, serial)
+ docfile += '%x%s' % (level, serial)
docfile = 'python%s%s%s.chm' % (major, minor, docfile)
# Build the mingw import library, libpythonXY.a