from functools import *

def encode(n,s):
    return reduce(lambda acc,d: acc+d,map(lambda c: chr(ord('a')+((ord(c) - ord('a') + n) % 26)) if c.islower() else c,s),"")

encode(24,"abc")

'yza'

ord('a')

97

chr(100)

'd'

str(['a','b','c'])

"['a', 'b', 'c']"

xs = ['a','b','c']
result = ""
for x in xs:
    result += x
print(result)

reduce(lambda acc,d: acc+d,xs,"")

ns = [2,6,9,12]

result = 0
for n in ns:
    result += n*n
print(result)

265

ns = [2,6,9,12]
reduce(lambda x,y:x+y,list(map(lambda x:x*x, ns)),0)

265