i7.py

import itertools
l1=itertools.chain(["red","blue"],[1,2,3],"hello")
#Returns an iterator object
print (l1)#Output:<itertools.chain object at 0x029FE4D8>
#converting iterator object to list object
print(list(l1))#Output:['red', 'blue', 1, 2, 3, 'h', 'e', 'l', 'l', 'o']


l2=itertools.chain("ABC","DEF","GHI")
print (list(l2))#Output:['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I']