zip Put two lists , The values of the corresponding positions are spliced into a meta group , The final result is a list nested tuple , notes : Unmatched value , Will be abandoned .
l1 = [1,1,3,6,7]
l2 = [1,2,3,4]
print(list(zip(l1,l2))) # [(1, 1), (2, 2), (3, 3), (6, 4)]
filter Put the elements in the list , - pass in the specified function , After filtration , Get a list type result
l1 = [1,2,3,6,7]
print(list(filter(lambda a:a>2,l1))) # [3, 6, 7]
map Set the values in the list , - pass in the specified function , After calculation , Get a list type result
l1 = [1,2,3,6,7]
print(list(map(lambda a:a+1,l1))) # [2, 3, 4, 7, 8]
sorted Sort the values in the list in ascending order
l1 = [1,2,3,6,7]
print(sorted(l1)) # [1, 2, 3, 6, 7]
reversed Sort the values in the list in descending order
#Python Learning exchange group ：857662006
l1 = [1,2,3,6,7]
print(list(reversed(l1))) # [7, 6, 3, 2, 1]
reduce Sum up
from functools import reduce
print(reduce(lambda x,y:x+y,l1)) # 19
