Make _to_python recursive for lists and tuples (#94)

* Update pysolr.py

Let _to_python work recursively on lists and tuples.

* Update client.py

Update tests for recursive _to_python.

Author: tuky

pysolr.py

@@ -734,7 +734,10 @@ def _to_python(self, value):
             return value
 
         if isinstance(value, (list, tuple)):
-            value = value[0]
+            result = [self._to_python(v) for v in value]
+            if isinstance(value, tuple):
+                result = tuple(result)
+            return result
 
         if value == "true":
             return True

tests/test_client.py

@@ -549,8 +549,8 @@ def test__to_python(self):
         self.assertEqual(self.solr._to_python(1.2), 1.2)
         self.assertEqual(self.solr._to_python(b"hello"), "hello")
         self.assertEqual(self.solr._to_python("hello ☃"), "hello ☃")
-        self.assertEqual(self.solr._to_python(["foo", "bar"]), "foo")
-        self.assertEqual(self.solr._to_python(("foo", "bar")), "foo")
+        self.assertEqual(self.solr._to_python(["foo", "bar"]), ["foo", "bar"])
+        self.assertEqual(self.solr._to_python(("foo", "bar")), ("foo", "bar"))
         self.assertEqual(
             self.solr._to_python('tuple("foo", "bar")'), 'tuple("foo", "bar")'
         )