unicode fix for python 2

Fixes #269.

Author: nschloe

matplotlib2tikz/axes.py

@@ -38,17 +38,17 @@ def __init__(self, data, obj):
         title = obj.get_title()
         data["current axis title"] = title
         if title:
-            self.axis_options.append("title={{{}}}".format(title))
+            self.axis_options.append(u"title={{{}}}".format(title))
 
         # get axes titles
         xlabel = obj.get_xlabel()
         if xlabel:
             xlabel = mpl_backend_pgf.common_texification(xlabel)
-            self.axis_options.append("xlabel={{{}}}".format(xlabel))
+            self.axis_options.append(u"xlabel={{{}}}".format(xlabel))
         ylabel = obj.get_ylabel()
         if ylabel:
             ylabel = mpl_backend_pgf.common_texification(ylabel)
-            self.axis_options.append("ylabel={{{}}}".format(ylabel))
+            self.axis_options.append(u"ylabel={{{}}}".format(ylabel))
 
         # Axes limits.
         # Sort the limits so make sure that the smaller of the two is actually

test/test_annotate.py

@@ -38,5 +38,6 @@ def test():
 
 if __name__ == "__main__":
     import helpers
+
     # helpers.compare_mpl_latex(plot)
     helpers.print_tree(plot())

test/test_arrows.py

@@ -71,5 +71,6 @@ def to_texstring(s):
 
 if __name__ == "__main__":
     import helpers
+
     helpers.compare_mpl_latex(plot)
     # helpers.print_tree(plot())

test/test_basic_sin.py

@@ -30,5 +30,6 @@ def test():
 
 if __name__ == "__main__":
     import helpers
+
     # helpers.compare_mpl_latex(plot)
     helpers.print_tree(plot())

test/test_fancybox.py

@@ -205,5 +205,6 @@ def test():
 
 if __name__ == "__main__":
     import helpers
+
     # helpers.compare_mpl_latex(plot)
     helpers.print_tree(plot())