>>> from failures import failures

>>> lfail = [['A05', 'T1', 'CX1', 'elec', 110, 50],
...          ['B04', 'T3', 'ER4', 'elec', 50, 125],
...          ['A11', 'T1', 'GY6', 'mec', 40, 190],
...          ['B04', 'T3', 'CX2', 'mec', 30, 155],
...          ['A11', 'T1', 'HH7', 'mec', 70, 80],
...          ['B03', 'T2', 'XC7', 'mec', 100, 110],
...          ['A05', 'T1', 'XZ3', 'mec', 40, 50],
...          ['A02', 'T4', 'BT5', 'elec', 30, 60],
...          ['B04', 'T3', 'AX4', 'elec', 90, 95],
...          ['A05', 'T1', 'HT6', 'elec', 45, 105]]

>>> delec, dmec = failures(lfail)
>>> if delec != {'T1': [(150, 'A05', 'HT6'), (160, 'A05', 'CX1')], 'T3': [(175, 'B04', 'ER4'), (185, 'B04', 'AX4')], 'T4': [(90, 'A02', 'BT5')]}:
...   print(delec)
>>> if dmec != {'T1': [(90, 'A05', 'XZ3'), (150, 'A11', 'HH7'), (230, 'A11', 'GY6')], 'T3': [(185, 'B04', 'CX2')], 'T2': [(210, 'B03', 'XC7')]}:
...   print(dmec)