Fix tests

Author: SylvainCorlay

traittypes/tests/notes jeroen

@@ -0,0 +1,40 @@
+Procedural.
+
+s = IntSlider()
+t = Text()
+dlink((s, value), (d, value), foo)
+HBox([s, t])
+
+
+Magics!!
+
+ * decorator -> example with explicit code.
+ * use of abbreviations as default values : the default values don't make sense for the function.
+ * introspection -> explicitly give the arguments?
+ * widget abbreviation -> explicit widget.
+
+
+ * future meaningful use of abbreviations
+
+def f(x : float, y : int):
+    pass
+
+interact(f)
+
+ * encode constraints in type annotations.
+
+
+
+
+
+float -> Float -> FloatWidget
+def f(x = Float(min=0, max=4), y = Int()):
+float -> Float -> FloatWidget
+
+
+def f():
+
+
+
+
+thierry monteil

traittypes/traittypes.py

@@ -78,6 +78,12 @@ def __init__(self, default_value=Undefined, allow_none=False, dtype=None, **kwar
         self.validators = []
         super(Array, self).__init__(default_value=default_value, allow_none=allow_none, **kwargs)
 
+    def make_dynamic_default(self):
+        if self.default_value is None:
+            return self.default_value
+        else:
+            return np.copy(self.default_value)
+
 
 class DataFrame(SciType):
 
@@ -112,6 +118,12 @@ def __init__(self, default_value=Undefined, allow_none=False, dtype=None, **kwar
         self.validators = []
         super(DataFrame, self).__init__(default_value=default_value, allow_none=allow_none, **kwargs)
 
+    def make_dynamic_default(self):
+        if self.default_value is None:
+            return self.default_value
+        else:
+            return self.default_value.copy()
+
 
 class Series(SciType):
 
@@ -145,3 +157,9 @@ def __init__(self, default_value=Undefined, allow_none=False, dtype=None, **kwar
             default_value = pd.Series(default_value)
         self.validators = []
         super(Series, self).__init__(default_value=default_value, allow_none=allow_none, **kwargs)
+
+    def make_dynamic_default(self):
+        if self.default_value is None:
+            return self.default_value
+        else:
+            return self.default_value.copy()