Create the warning 2 subclasses

Author: Guillaume Lemaitre

imblearn/base.py

@@ -260,6 +260,9 @@ def fit(self, X, y):
 
         super(BaseBinarySampler, self).fit(X, y)
 
+        if np.unique(y) == 1:
+            warnings.warn('Hello')
+
         # Check that the target type is binary
         if not type_of_target(y) == 'binary':
             warnings.warn('The target type should be binary.')
@@ -295,12 +298,12 @@ def fit(self, X, y):
 
         super(BaseMulticlassSampler, self).fit(X, y)
 
+        if np.unique(y) == 1:
+            warnings.warn('Hello')
+
         # Check that the target type is either binary or multiclass
         if not (type_of_target(y) == 'binary' or
                 type_of_target(y) == 'multiclass'):
             warnings.warn('The target type should be binary or multiclass.')
 
-        if np.unique(X).size == 1:
-            warnings.warn('Hello')
-
         return self