Python - Randomisation and List (Day 4)

This is a 100 Days challenge to learn a new language (Python). 100 Days of Code - The Complete Python Pro Bootcamp 

I will post some notes to motivate myself to finish this challenge.

Random Module

Reference

Ex:

# import random module

import random

# Returns a random integer between a and b (both inclusive)

random_int = random.randint(1, 100)

print(random_int)

# Returns the next random floating point number between [0.0 to 1.0)

random_float = random.random()

print(random_float)

Result:

9

0.7455953290494418

NOTE: What is pseudorandom number generators? Reference

List

It is a Data Structure

    * contain relationship

    * order matters

Reference

Ex:

# List

fruits = ["banana", "apple"]

print(fruits)

# How to point out specific item from list

print(fruits[1])

# How to add one item into list

fruits.append("cherry")

print(fruits)

# How to add multiple items into list

fruits.extend(["pear", "kiwi"])

print(fruits)

Result:

['banana', 'apple']

apple

['banana', 'apple', 'cherry'] ['banana', 'apple', 'cherry', 'pear', 'kiwi']

Nested List

Items in a list have the similar aspect, and that is why they are put into a list

But with more detail information, we can categorize them into another sub list  

Ex:

# regular list

car = ['m3', 'x3', 'x5', 'cayenne', 'taycan', '911']

print(car)

# nested list

bmw = ['m3', 'x3', 'x5']

porsche = ['cayenne', 'taycan', '911']

car = [bmw, porsche]

print(car)

Result:

['m3', 'x3', 'x5', 'cayenne', 'taycan', '911'] [['m3', 'x3', 'x5'], ['cayenne', 'taycan', '911']]

Challenge - Coin Toss Game

Ex:

# Remember to use the random module

import random

# By default the random number generator uses the current system time.

# Use the seed() method to customize the start number of

# the random number generator.

# random.seed(100)

# generate a random integer from o or 1

rand_int = random.randint(0, 1)

if rand_int == 1:

    print("Heads")

else:

    print("Tails")

Result:

Heads

Challenge - Who Pay Bill?

Ex:

import random

names_string = input("Give me everybody's names, separated by a comma. ")

names = names_string.split(", ")

# Don't use 'choice' function from random module for this exercise

random_index = random.randint(0, len(names)-1)

print(f"{names[random_index]} is going to buy the meal today!")

Result:

Give me everybody's names, separated by a comma.

Frank, Jake, Mary, Demo, Tester

Frank is going to buy the meal today!

Challenge - Rock Paper Scissors Game

Ex:

import random

rock = '''

    _______

---'   ____)

      (_____)

      (_____)

      (____)

---.__(___)

'''

paper = '''

    _______

---'   ____)____

          ______)

          _______)

         _______)

---.__________)

'''

scissors = '''

    _______

---'   ____)____

          ______)

       __________)

      (____)

---.__(___)

'''

# list of options

options = [rock, paper, scissors]

# Get User Choice

user_choice = int(

    input("What do you choose? Type 0 for Rock, 1 for Paper or

2 for Scissors."))

print(options[user_choice])

# Get Computer Choice

computer_choice = random.randint(0, len(options)-1)

print("Computer chose:")

print(options[computer_choice])

if user_choice == computer_choice:

    print("It's a draw")

elif user_choice == 0 and computer_choice == 2:

    print("You win!")

elif user_choice == 2 and computer_choice == 0:

    print("You lose")

elif computer_choice > user_choice:

    print("You lose")

else:

    print("You win!")

Result:

What do you choose? Type 0 for Rock, 1 for Paper or 2 for Scissors.1 _______ ---' ____)____ ______) _______) _______) ---.__________) Computer chose: _______ ---' ____)____ ______) __________) (____) ---.__(___) You lose