weird behaviour with list of dictionaries in python

Question

Here is a simple code that performs operations on lists:

>>> a = [0] * 5
>>> a
[0, 0, 0, 0, 0]
>>> a[0] = 5
>>> a
[5, 0, 0, 0         


        

Answer 1

Try this,

a = map([].append, {} for i in xrange(3))