Test a fix for #229

Author: janmotl

category_encoders/utils.py

@@ -60,8 +60,6 @@ def convert_input(X, columns=None, deep=False):
                 X = pd.DataFrame(X.todense(), columns=columns, copy=deep)
             else:
                 raise ValueError('Unexpected input type: %s' % (str(type(X))))
-
-            X = X.apply(lambda x: pd.to_numeric(x, errors='ignore'))
     elif deep:
         X = X.copy(deep=True)