num_sec is passed as str in some cases. it was auto converted to int …

…in py2 but it doesn't work in py3. let's add intentional float conversion

tests/test_simple.py

@@ -118,3 +118,11 @@ def test_nonnumeric_numsec_timedelta_via_string():
     with pytest.raises(TimedOutError):
         wait_for(func,
                  timeout="2s", delay=1)
+
+
+def test_str_numsec():
+    incman = Incrementor()
+    func = partial(lambda: incman.i_sleep_a_lot() > 10)
+    for value in "2", "1.5":
+        with pytest.raises(TimedOutError):
+            wait_for(func, num_sec=value)

wait_for/__init__.py

@@ -49,7 +49,7 @@ def _get_timeout_secs(kwargs):
         else:
             raise ValueError("Timeout got an unknown value {}".format(timeout))
     else:
-        num_sec = kwargs.get('num_sec', 120)
+        num_sec = float(kwargs.get('num_sec', 120))
     return num_sec