#362 Create n strings of length k using symbols from the given alphabet using python.

import random
def random_char(y):
    alphabet = ['A', 'T', 'C', 'G']
    return ''.join(random.choice(alphabet) for x in range(y))

n=20
k=10
for i in range(0,n):
    print(random_char(k))

Output:

TCTGTTCCAG
GACTAATACA
AGAACTAAGT
CCTCACCATG
GACTTCCAGG
CTGAGGCTTG
TGAGACAGAG
GATCTACCGA
TCAAACTAAT
ATCCGATCTT
GAGGCACTCC
AACCGAATGT
CTCACTGTTC
GTCCCTGGGA
CGTGGTCCAA
AGCCCGATGA
CCTTCTCTCA
GGCCGCTCGT
CACCGGAGTG
GAAGTGACGA