Make conf.py work with py3

dmcdougall · dmcdougall · commit df93ecada623 · 2012-10-13T18:07:27.000+01:00
diff --git a/doc/conf.py b/doc/conf.py
@@ -174,10 +174,10 @@
 
 # Additional stuff for the LaTeX preamble.
 latex_preamble = """
-   \usepackage{amsmath}
-   \usepackage{amsfonts}
-   \usepackage{amssymb}
-   \usepackage{txfonts}
+   \\usepackage{amsmath}
+   \\usepackage{amsfonts}
+   \\usepackage{amssymb}
+   \\usepackage{txfonts}
 """
 
 # Documents to append as an appendix to all manuals.
