Python Python中的高级函数(魔法函数)

# coding:utf-8

from functools import reduce

frunts = ['apple', 'banana', 'orange']

result = filter(lambda x: 'e' in x, frunts)
print(list(result))
print(frunts)


def filter_func(item):
    if 'e' in item:
        return True


print('--------')
filter_result = filter(filter_func, frunts)
print(list(filter_result))

map_result = map(filter_func, frunts)  # > all
print(list(map_result))


reduce_result = reduce(lambda x, y: x + y, [2, 1, 2, 100])
print(reduce_result)

reduce_result_str = reduce(lambda x, y: x + y, frunts)
print(reduce_result_str)