Python day three: mutable types and immutable types, variable assignments, lists, tuples, dictionaries

First, the content

Ii. Exercise 1, Element classification

Requirements: 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}

L = [11,22,33,44,55,66,77,88,99,90]d = {' K1 ': [], ' K2 ': []}for i in Range (Len (l)):    if l[i] >:        d[' K1 '].append ( L[i])    else:        d[' K2 '].append (L[i]) print (d)

2. Find

Requirements:

Finds elements in a list, removes spaces for each element, and finds all elements that begin with "L" or "L" and End with "K".

Li = ["Dark", "dxxk", "Lisa", "Tony", "SB"]

Tu = ("Dxxk", "Dark", "Lisa", "Tony", "Copila")

DiC = {' K1 ': ' Lisa ', ' K2 ': ' Dark ', ' K3 ': ' Lisa ', ' K4 ': ' Copila '}

3. Output Product List

4. Shopping Cart

5. User interaction, show the choice of three-level linkage between provinces and counties

Python day three: mutable types and immutable types, variable assignments, lists, tuples, dictionaries