Python 语法基础 lambda, list comprehensions

lambda

people = ['Dr. Christopher Brooks', 'Dr. Kevyn Collins-Thompson', 'Dr. VG Vinod Vydiswaran', 'Dr. Daniel Romero']

def split_title_and_name(person):
    return person.split()[0] + ' ' + person.split()[-1]

#option 1
a=[]
for person in people:
    print(split_title_and_name(person) == (lambda x: x.split()[0] + ' ' + x.split()[-1])(person))

    a.append((lambda x: x.split()[0] + ' ' + x.split()[-1])(person))

#option 2

list(map(split_title_and_name, people)) == list(map(lambda x: x.split()[0] + ' ' + x.split()[-1],people))

Let's iterate from 0 to 999 and return the even numbers.


List Comprehensions

my_list = []
for number in range(0, 1000):
    if number % 2 == 0:
        my_list.append(number)
my_list


Now the same thing but with list comprehension.




my_list = [number for number in range(0,1000) if number % 2 == 0]
my_list