The example files need to be opened with the "b" flag.
diff --git a/Doc/lib/libcsv.tex b/Doc/lib/libcsv.tex
index 9cf5044..24b063e 100644
--- a/Doc/lib/libcsv.tex
+++ b/Doc/lib/libcsv.tex
@@ -312,7 +312,7 @@
\begin{verbatim}
import csv
-reader = csv.reader(file("some.csv"))
+reader = csv.reader(file("some.csv", "rb"))
for row in reader:
print row
\end{verbatim}
@@ -321,7 +321,7 @@
\begin{verbatim}
import csv
-writer = csv.writer(file("some.csv", "w"))
+writer = csv.writer(file("some.csv", "wb"))
for row in someiterable:
writer.writerow(row)
\end{verbatim}