Python Data type Exercises

First, the element classification

There is a collection of the following values [11,22,33,44,55,66,77,88,99,90 ...], saving all values greater than 66 to the first key in the dictionary, and saving the value less than 66 to the value of the second key.
That is: {' K1 ': All values greater than 66, ' K2 ': All values less than 66}

li=[11,22,33,44,55,66,77,88,99,90]dic={'K1':[ ],'K2':[ ]} forIinchLi:Print(i)ifI >70: dic['K1'].append (i)Else: dic['K2'].append (i)Print(DIC)

Find the elements in the lookup list, remove the spaces for each element, and look for all elements that begin with a or a and end with C. Li = ["Alec", "Aric", "Alex", "Tony", "Rain"] Tu = ("Alec", "Aric", "Alex", "Tony", "rain") dic = {' K1 ': "Alex", ' K2 ': ' Aric ', ' K3 ': ' Alex ', ' K4 ': ' Tony '}

Li = ["Alec","Aric","Alex","Tony","Rain"]tu= ("Alec","Aric","Alex","Tony","Rain") DiC= {'K1':"Alex",'K2':'Aric',"K3":"Alex","K4":"Tony"}ret= [] forIinchli:i=I.strip ()ifI.startswith ('a'or'A') andI.endswith ('C'): Ret.append (i) forIinchtu:i=I.strip ()ifI.startswith ('a'or'A') andI.endswith ('C'): Ret.append (i) forIinchdic:i=I.strip ()ifI.startswith ('a'or'A') andI.endswith ('C'): Ret.append (i)Print(ret)#results: [' Alec ', ' Aric ', ' Alec ', ' Aric ']

Three Output Product list, user input serial number, display the user selected productsProduct Li = ["Mobile phone", "Computer", "mouse pad", ' yacht ')

li=["Mobile Phone","Computer","Mouse Pad","Yacht"]Print("0 is a mobile phone, 1 is a computer, 2 is a mouse pad, 3 is a yacht") Num=input ("Please enter a number:")ifnum=='0':    Print(li[0])elifnum=='1':    Print(li[1])elifnum=='2':    Print(li[2])elifnum=='3':    Print(li[3])Else:    Print("')

four, shopping cart

Functional Requirements:

• Require users to enter total assets, for example: 2000
• Display the list of items, let the user select the item according to the serial number, add the shopping cart
• Purchase, if the total amount of goods is greater than the total assets, indicating that the account balance is insufficient, otherwise, the purchase succeeds.
• Add: Can recharge, a product to remove the shopping cart

Goods = [    {"name":"Computer"," Price": 1999},    {"name":"Mouse"," Price": 10},    {"name":"Yacht"," Price": 20},    {"name":"Beauty"," Price": 998},]Print("enter 0 to buy a computer, enter 1 to buy a mouse, enter 2 to buy a yacht, enter 3 to buy a beauty, enter another value, settle the cart") Li=[]total= Input ("Please enter the total amount:") whileTrue:num= Input ("Enter the serial number you want to purchase:")    ifint (num) = =0:li.append (goods[0][' Price'])    elifint (num) = = 1: Li.append (goods[1][' Price'])    elifint (num) = = 2: Li.append (goods[2][' Price'])    elifint (num) = = 3: Li.append (goods[3][' Price'])    Else:         Breaksum=0 forIinchLi:sum+=IPrint(sum)ifSum>int (total):Print("Insufficient Balance")Else:    Print("Purchase Success")

Python Data type Exercises