Given two empty lists lst1 and lst2. random.randint(1, 50) generates random numbers from 1 to 50. Randomly add 10 numbers to each empty list, write a function to print common items.
import random
lst1 = []
lst2 = []
def randomly_add_items(lst1, lst2):
def find_common_items(lst1, lst2):
Given a lst of integers. Write a function to remove duplicated items and return in a new list.
lst = [12, 23, 34, 23, 34, 25, 65, 32, 25]
# Implement this function to return [12,23,34,25,65,32]
def remove_dups(lst):
Given two lists with the same length of integer items. Write a function to return sum of list items in a new list.
lst1 = [1,2,3,4,5]
lst2 = [2,3,4,5,6]
# Implement the function to return [3,5,7,9,11]
def add_list_items(lst1, lst2):
Following are some common Python functions to process data. Here it comes to level up in Python lists, do more fun and exciting exercises.
| add object at end | |
| add object anywhere | |
| delete object | |
| reverse in-place , changes original list | |
| sort in-place, changes original list | |
| copy of reversed | |
| copy of sorted | |
| merger another list | |
| number of occurrences | |
| first index of a value | |
| max value of list items | |
| min value of list items |
Persumably, list is a box of chocolates in which chocolates in and out. Possible occasions are, chocolates are eaten, new ones are in or they are given to others. Basically, Python offers function to each of those occasions.
append(item): Add a item to the end of the listlst = [1,2,3,4,5]
lst.append(6)
print(lst) # returns [1,2,3,4,5,6]
insert(pos, item): Insert a item to a positionlst = [1,2,3,4,5]
lst.insert(2, 6) # insert 6 to index 2
# returns [1,2,6,3,4,5]
# 6 becomes the item at index 2
print(lst)
remove(item) or pop(): Remove a item from the listlst = [1,2,3,4,5]
lst.remove(3) # remove item 3 from the list
print(lst) # returns [1,2,4,5]
an_item = lst.pop() # return 5
another_item = lst.pop() # return 4
print(lst) # return [1,2]
reverse(): Reverse a listlst = [1,2,3,4,5]
lst.reverse()
print(lst) # returns [5,4,3,2,1]
sort(): Sort a listlst = [3,1,4,2,5]
lst.sort() # sort the list
print(lst) # returns [1,2,3,4,5]
count(item): Counts numbers of this item in the listlst = [1,2,3,3,4,5,6,6,7,6]
print(lst.count(6)) # returns 3
index(item): Returns the index of the itemlst = [1,2,3,4,5]
print(lst.index(4)) # returns 3
max(lst): Returns the max value of list itemslst = [12,34,432435,54,62,3232]
print(max(lst)) # returns 432435
max(lst): Returns the min value of list itemslst = [12,34,432435,54,62,3232]
print(min(lst)) # returns 12
Homework
Given a unsorted list of integers. Write a function to return the biggest item.
lst = [13,42,23,543,23,54,134]
def return_max(lst): # returns 543
Hints
max(lst) function