Casting a LocalizedValue to string seems slow

[bogdanhopu]

Here are some benchmarks comparing the LocalizeValue with accessing a dict element:

Line #      Hits         Time  Per Hit   % Time  Line Contents
280    112864    2373159.0     21.0     43.4              'location': {'slug': str(location.slug), 'name': str(location.name)},
280    112864     145854.0      1.3      4.3              'location': {'slug': location.slug[lang], 'name': location.name[lang]},

Line #      Hits         Time  Per Hit   % Time  Line Contents
==============================================================
279                                                   result = {
280    112864    2373159.0     21.0     43.4              'location': {'slug': str(location.slug), 'name': str(location.name)},
281    112864      95490.0      0.8      1.7              'purpose': purpose
282                                                   }
283    112864      72180.0      0.6      1.3          if category:
284                                                       result['category'] = {
285    109312    1198026.0     11.0     21.9                  'slug': str(self.categories[category]['slug']),
286    109312    1122646.0     10.3     20.6                  'name': str(self.categories[category]['name'])
287                                                       }

Line #      Hits         Time  Per Hit   % Time  Line Contents
==============================================================
278    112864     369103.0      3.3     10.9          lang = django.utils.translation.get_language()
279                                                   result = {
280    112864     145854.0      1.3      4.3              'location': {'slug': location.slug[lang], 'name': location.name[lang]},
281    112864      93499.0      0.8      2.8              'purpose': purpose
282                                                   }
283    112864      73027.0      0.6      2.2          if category:
284                                                       result['category'] = {
285    109312    1298347.0     11.9     38.3                  'slug': str(self.categories[category]['slug']),
286    109312    1162843.0     10.6     34.3                  'name': str(self.categories[category]['name'])
287                                                       }