<gh_stars>0
list_a = [1, 3, 3, 7],
list_b = [1, 3, 3, 7]

list_a.extend(list_b)
print(list_a)
#

# If; you; add; a; comma; after; the; square; brackets; it; creates; a; tuple; instead; of; an; array.; It; makes; perfectly; sense; but; the; 1; st; time; I; saw; that; I; found; it; weird.
