一：for循环和if-else结合

1：一行实现双层循坏

# 循环遍历 [[],[],[]] list_a = [['Chris Pratt', ' Vin Diesel', ' Bradley Cooper', ' Zoe Saldana'], ['Noomi Rapace', ' Logan Marshall-Green', ' Michael Fassbender', ' Charlize Theron']]list_b = [i for j in list_a for i in j]print(list_b)# ['Chris Pratt', ' Vin Diesel', ' Bradley Cooper', ' Zoe Saldana', 'Noomi Rapace', ' Logan Marshall-Green', ' Michael Fassbender', ' Charlize Theron']

 2：一行实现for-与if-else逻辑

a = [i if i >1 else 8 for i in [8,9,7]]               #  b= [ i for i in [0,1,2,3] if i >0]                      # 只有if时要写在后面print(a)print(b)

 3：Facebook 景霄-07条件与循环_思考题

　　ps:一行或多行实现 aim_list

attributes = ['name', 'dob', 'gender']values = [['jason', '2000-01-01', 'male'],['mike', '1999-01-01', 'male'],['nancy', '2001-02-01', 'female']]# expected outout:aim_list = [{
   'name': 'jason', 'dob': '2000-01-01', 'gender': 'male'},{
   'name': 'mike', 'dob': '1999-01-01', 'gender': 'male'},{
   'name': 'nancy', 'dob': '2001-02-01', 'gender': 'female'}]#  一行one = [dict(zip(attributes,value)) for value in values ]#  多行more = []temp = {}for index,value in enumerate(values):    temp[attributes[index]] = value[index]    more.append(temp)print('one:',one)print('more:',more)