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def unpack_normal(l):
"""
>>> unpack_normal([1,2])
(1, 2)
>>> unpack_normal([1,2,3]) # doctest: +ELLIPSIS
Traceback (most recent call last):
ValueError: ...
"""
a,b = l
return a,b
def unpack_comp(l):
"""
>>> unpack_comp([1,2])
(1, 2)
>>> unpack_comp([1,2,3]) # doctest: +ELLIPSIS
Traceback (most recent call last):
ValueError: ...
"""
a,b = [ n for n in l ]
return a,b
def unpack_expr(l):
"""
>>> unpack_expr([1,2])
(1, 4)
>>> unpack_expr([1,2,3]) # doctest: +ELLIPSIS
Traceback (most recent call last):
ValueError: ...
"""
a,b = [ n*n for n in l ]
return a,b
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