diff --git a/setup.py b/setup.py
index d3eb68a..5832d0a 100644
--- a/setup.py
+++ b/setup.py
@@ -42,5 +42,7 @@ setup(name='tww',
       install_requires=gen_from_file(),
       author_email='',
       license='MIT',
-      packages=[''],
+      packages=['tww'],
+      package_dir={'tww': 'src/tww'},
+      package_data={'tww': ['data/*.csv']},
       zip_safe=False)
diff --git a/src/tww/__init__.py b/src/tww/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/tww/data/.cache.csv b/src/tww/data/.cache.csv
new file mode 100644
index 0000000..6dd48bc
--- /dev/null
+++ b/src/tww/data/.cache.csv
@@ -0,0 +1,6 @@
+zurich,47.3666667,8.5500002
+california,40.9066368,14.2958736
+bulgaria,43.0,25.0
+usa,39.7563889,46.7511101
+brazil,-10.0,-55.0
+sydney,-33.86785,151.2073212
diff --git a/data/cities.csv b/src/tww/data/cities.csv
similarity index 100%
rename from data/cities.csv
rename to src/tww/data/cities.csv
diff --git a/data/countries.csv b/src/tww/data/countries.csv
similarity index 100%
rename from data/countries.csv
rename to src/tww/data/countries.csv
diff --git a/test_tww.py b/src/tww/test_tww.py
similarity index 100%
rename from test_tww.py
rename to src/tww/test_tww.py
diff --git a/tww.py b/src/tww/tww.py
similarity index 100%
rename from tww.py
rename to src/tww/tww.py