Homework for lesson 7

lesson_7\homework.py

# Task 1. Create a basic for loop

# Complete the following code in such a way that this loop prints the characters 
# of `name` one at a time.

# name = "Joseph"

# for ??? in ???:
    # print(???)

name = "Joseph"

for name in name:
    print(name)
# ---------------------------------------------------------------------
# Task 2. Create a basic `for` loop with a counter

# Complete the following code in such a way that the loop increments the counter
# and prints the number of characters in `name`name at the end.

# name = 'Tom'
# counter = ???

# for ??? in ???:
    # counter = ???

# This should print '3'
# print(counter)

name = 'Tom'
counter = 0

for name in name:
    counter = counter + 1
print(counter)
# ---------------------------------------------------------------------
# Task 3. Create a basic 'while' loop

# Complete the following code in such a way that the loop exits after five iterations, without using break.

# 🔥 Hint: Think of it as: while counter is under 5, increment the counter and print its value🔥

"""
This should print:
1
2
3
4
5
"""
# counter = ???

# while counter ???:
    # counter = ???
    # print(counter)

counter = 0

while counter < 5:
    counter = counter + 1
    print(counter)
# ---------------------------------------------------------------------
# Task 4. Exit a loop using break 🛑

# Take the previous example, and modify it so you exit the loop after five iterations, 
# but this time do it using break.

# counter = ???

# while ???:
    # counter = ???

    # if ???:
        # ???
        
    # print(counter)

counter = 0

while True:
    counter = counter + 1

    if counter > 5:
        break

    print(counter)
# ---------------------------------------------------------------------
# Task 5. Range

# Remember that range(start, end, step) behaves somewhat like list slicing, so start is inclusive,
# end is exclusive, and step is optional.

# Figure out the values required for range() to generate the expected output.

# 0, 1, 2, 3, 4, 5 (use only one argument)
# range(???)

# 0, 1, 2, 3, 4, 5 (use two arguments: start and end)
# range(???)

# Odd numbers between 0 and 10: 1, 3, 5, 7, 9
# range(???)

0, 1, 2, 3, 4, 5
range(6)

# 0, 1, 2, 3, 4, 5 (use two arguments: start and end)
range(0,6)

# Odd numbers between 0 and 10: 1, 3, 5, 7, 9
range(1,10,2)
# ---------------------------------------------------------------------
# Task 6. Using range() in a loop

# Remember that range() returns an iterable, so you will usually find it used in a for loop.

# Complete the following code so it prints the even numbers between 0 and 10;

# for ??? in range(???):
    # print(???)

for number in range(2,10,2):
     print(number)

# Exercises 🏋🏻

# ---------------------------------------------------------------------
# Exercise 1. Digits Only!

# Part one: Given a string of letters and digits, complete the program to print only the digits. 
# For example, for the string '3catsand5tacos', output should be: 3 5

# Strategy:
# - Create variable to hold the string: my_string = '3catsand5tacos'
# - Create a string to represent the numbers: numbers = '1234567890'
# - Create a loop to iterate through characters of my_string. 
# - If the character is a digit (`if character in numbers`) print it.

# my_string = 's0m3 str1ng w1th numb3r5'
# numbers = '1234567890'

# for ??? in ???:
    # if ??? in ???:
    #     print(character)

my_string = 's0m3 str1ng w1th numb3r5'
numbers = '1234567890'

for character in my_string:
    if character in numbers:
        print(character)


# Part two: Modify the code to print the first digit only

my_string = 's0m3 str1ng w1th numb3r5'
numbers = '1234567890'
number_count = 0
for character in my_string:
    if character in numbers:
        number_count += 1

        print(f"The first digit is {character}")
        break

# ---------------------------------------------------------------------
# Exercise 2. Vowel Counter

# Imagine you're working on a text analysis tool that needs to count the number of vowels in a given string. 
# As a simple practice, you have been provided with a famous quote. 
# Your task is to count and display the total number of vowels in this quote.

# quote = "Life is like riding a bicycle. To keep your balance, you MUST keep moving."
# vowel_count = 0

# for ??? ??? ???:
    # 'A' and 'a' are different in python, so we include both upper and lowercase
    # vowels in our comparison string to account for this difference.
    # if ??? ??? 'aeiouAEIOU':
        # vowel_count += ???

# print(f"The number of vowels in the quote is: {vowel_count}")

quote = "Life is like riding a bicycle. To keep your balance, you MUST keep moving."
vowel_count = 0
vowels = "aeiouAEIOU"
for letters in quote:
    if letters in vowels:
        vowel_count += 1
print(f"The number of vowels in the quote is: {vowel_count}")

# ---------------------------------------------------------------------
# Exercise 3. Sum of all Digits 🔢

# You have a mixed string that contains both letters and numbers, like an alphanumeric password or 
# a serial key. Your task is to find all the numbers in this string and sum them up.

# Hint: You can put the numbers you find into a list (cast as `int`) and use `sum()` on the list at the end.

# mixed_string = "abc123xyz456"
# digits = "0123456789"
# found_digits = ???

# for char in mixed_string:
    # if char in ???:
        # found_digits.a???(int(char))

# print(f"The total sum of numbers in the string is: {sum(found_digits)}")

mixed_string = "abc123xyz456"
digits = "0123456789"
found_digits =[]

for char in mixed_string:
        if char in digits:
         found_digits.append(int(char))
        total = sum(found_digits)
print(f"The total sum of numbers in the string is: {total}")


# ---------------------------------------------------------------------
# Exercise 4. Password Strength Checker

# You are helping to develop a user registration page for a website. As part of the registration process, 
# you need to ensure that submitted passwords are strong. A strong password should have at least 8 characters.

# Create a Python program to check the strength of a list of passwords and count how many are strong.

# passwords = ['Passw0rd', 'hello', 'strongPass1', 'weak']
# strong_password_count = 0

# for ??? ??? ???:
    # if ???(password) >= 8:
        # strong_password_count ??? 1

# print(f"Number of strong passwords: {strong_password_count}")


passwords = ['Passw0rd', 'hello', 'strongPass1', 'weak']
strong_password_count = 0

for password in passwords:
    if len(password) >= 8:
        strong_password_count += 1

print(f"Number of strong passwords: {strong_password_count}")
# ---------------------------------------------------------------------
# Exercise 5. The Red Crayon 🖍️

# Imagine you have a box of crayons, and you're looking for a "Red" crayon. 
# You pull out one crayon at a time from the box. 

# Use a while loop to simulate this scenario.  As soon as you find the "Red" crayon, stop the loop.

# colors = ["Blue", "Yellow", "Green", "Red", "Purple", "Orange"]
# index = 0

# This should basically say: while the current color being evaluated is 
# different than "Red", increment to the next color and try again.
# while colors[index] ??? "Red":
    # print(f"Found {colors[index]} crayon. Still looking for Red.")
    # index ??? 1

# print("Found the Red crayon!")

colors = ["Blue", "Yellow", "Green", "Red", "Purple", "Orange"]
index = 0
found_red = False
# This should basically say: while the current color being evaluated is
# different than "Red", increment to the next color and try again.
while True:
    print(f"Found {colors[index]} crayon. Still looking for Red.")
    index += 1

    print("Found the Red crayon!")