[Tutor] two ways

[Shi Mu]

what is the difference between the two ways of assigning the list?
p=a vs. p=a[:]
>>> a=range(5)
>>> a
[0, 1, 2, 3, 4]
>>> p=a
>>> p
[0, 1, 2, 3, 4]
>>> p=a[:]
>>> p
[0, 1, 2, 3, 4]