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FIX error message for mixed metric input (for #2137) #2139

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FIX error message for mixed metric input (for #2137) #2139

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8 changes: 4 additions & 4 deletions sklearn/metrics/metrics.py
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Original file line number Diff line number Diff line change
Expand Up @@ -165,14 +165,14 @@ def _check_clf_targets(y_true, y_pred):

if type_true.startswith('multilabel'):
if not type_pred.startswith('multilabel'):
raise ValueError("Can't handle mix of multilabel and multiclass "
"targets")
raise ValueError("Can't handle mix of multilabel and {0} "
"targets".format(type_pred))
if type_true != type_pred:
raise ValueError("Can't handle mix of multilabel formats (label "
"indicator matrix and sequence of sequences)")
elif type_pred.startswith('multilabel'):
raise ValueError("Can't handle mix of multilabel and multiclass "
"targets")
raise ValueError("Can't handle mix of multilabel and {0} "
"targets".format(type_true))

elif (type_pred in ('multiclass', 'binary')
and type_true in ('multiclass', 'binary')):
Expand Down