zip, enumurate, lambda, map reduce

zip , enumurate

alist = ['a1', 'a2', 'a3']
blist = ['b1', 'b2', 'b3']
 
for a, b in zip(alist, blist):
    print(a, b)
 

a, b, c = zip((1, 2, 3), (10, 20, 30), (100, 200, 300))
print(a, b, c)
 
print([sum(x) for x in zip((1, 2, 3), (10, 20, 30), (100, 200, 300))])
 

alist = ['a1', 'a2', 'a3']
blist = ['b1', 'b2', 'b3']
 
for i, (a, b) in enumerate(zip(alist, blist)):
    print(i, a, b)
 

list(map(lambda x: x**2 if x % 2==0 else x, ex))

# Reduce
 
from functools import reduce
print(reduce(lambda x, y: x+y, [1,2,3,4,5]))
 
def factorial(n):
    return reduce(lambda x, y: x * y, range(1, n+1))
 
print(factorial(5))
 

-python for machine learning in edwith