>>> unpack_normal([1,2,3])
Traceback (most recent call last):
ValueError: too many values to unpack
+ >>> unpack_normal([1])
+ Traceback (most recent call last):
+ ValueError: need more than 1 values to unpack
>>> unpack_comp([1,2])
(1, 2)
>>> unpack_comp([1,2,3])
Traceback (most recent call last):
ValueError: too many values to unpack
+ >>> unpack_comp([1])
+ Traceback (most recent call last):
+ ValueError: need more than 1 values to unpack
>>> unpack_expr([1,2])
- (1, 2)
+ (1, 4)
>>> unpack_expr([1,2,3])
Traceback (most recent call last):
ValueError: too many values to unpack
+ >>> unpack_expr([1])
+ Traceback (most recent call last):
+ ValueError: need more than 1 values to unpack
"""
def unpack_normal(l):