How can I repeat elements in place in an array in Python? -

How can I repeat elements in place in an array in Python? -

how can repeat elements in place in array in python?

or similarly, more simple this:

drange = []; in xrange(j): drange.append(i); drange.append(i);

it should produce: [0, 0, 1, 1, 2, 2, ... j-1, j-1]

>>> j = 3 >>> drange = [] >>> in xrange(j): ... drange.extend([i]*2) ... >>> drange [0, 0, 1, 1, 2, 2]

or list comprehension

>>> drange = [i in xrange(j) k in range(2)] >>> drange [0, 0, 1, 1, 2, 2]

in cases method can appropriate

>>> drange = [i//2 in xrange(j*2)] >>> drange [0, 0, 1, 1, 2, 2]

python