import pandas as pd
def test(series):
    if series.name == 1:
        raise ValueError('You done messed up, A-A-RON!')
    else:
        results.append('Hooray!')

results = []
df = pd.DataFrame([[1, 2, 3], [4, 5, 6], [7, 8, 9]],
                  columns=['a', 'b', 'c'])
df.apply(test, axis=1)

Traceback (most recent call last):

  File "<ipython-input-21-c6ddd3899789>", line 1, in <module>
    data.apply(test, axis=1)

  File "C:UsersbbrittenAppDataLocalContinuumAnaconda3libsite-packagespandascoreframe.py", line 4262, in apply
    ignore_failures=ignore_failures)

  File "C:UsersbbrittenAppDataLocalContinuumAnaconda3libsite-packagespandascoreframe.py", line 4358, in _apply_standard
    results[i] = func(v)

  File "<ipython-input-11-5b919e977508>", line 3, in test
    raise ValueError('You done messed up, A-A-RON!')

ValueError: ('You done messed up, A-A-RON!', 'occurred at index 1')

results
# ['Hooray!', 'Hooray!']

df = df.iloc[:2]
results = []
df.apply(test, axis=1)

results
# ['Hooray!', 'Hooray!']