def timedelta_repr(td: datetime.timedelta) -> str:
"""
:returns: a human readable representation of the provided timedelta object
"""
assert isinstance(td, datetime.timedelta), type(td)
ZERO = {'00', '0'}
td = td.__str__().split(':')
end = []
if td[0] not in ZERO:
end.append('{} hours'.format(td[0]))
if td[1] not in ZERO:
end.append('{} minutes'.format(td[1]))
if td[2] not in ZERO:
end.append('{} seconds'.format(td[2]))
if len(end) > 1:
end.append('and ' + end.pop(-1))
return ', '.join(
val.lstrip('0')
for val in end
)
def coerce_output(value: timedelta) -> str:
if isinstance(value, timedelta):
return value.__str__()
raise TypeError(f"Duration cannot represent value: < {value} >")
