Python: Merge list with range list

Question

I have a list:

L = [\'a\', \'b\']

I need to create a new list by concatenating an original list which ra

Answer 1

My solution almost same, but the output is in different order...

does order matter?

Here is my solution

from itertools import product
L = ['a', 'b']
k = 4
L2 = range(1, k+1)
print [x+ str(y) for x,y in list(product(L,L2))]

output:

['a1', 'a2', 'a3', 'a4', 'b1', 'b2', 'b3', 'b4']

Answer 2

You can use a list comprehension:

L = ['a', 'b']
k = 4
L1 = ['{}{}'.format(x, y) for y in range(1, k+1) for x in L]
print(L1)

Output

['a1', 'b1', 'a2', 'b2', 'a3', 'b3', 'a4', 'b4']