3.8 & 3.10 Notes and Hacks
These are my 3.8 and 3.10 Notes and Hacks
3.8 & 3.10 Hacks
Hack 1
Iteration: repeats loops many times until condition is met
Iteration statement example: Let's say Lets say I are looking for my backpack inside of my house... What steps would you take?
- Let's say there are n rooms to search... number the rooms 1-n
- Look for the backpack in room number 1
- Search each room thoroughly for backpack
- Change each room number to the next highest number
- Repeat steps 3 & 4 until my backpack is found
My backpack being found counts as a stopping condition because if my backpack is found, the loop stops.
i = 0
while (i < 5):
print("I love country music!")
i = i + 1
for i in range(1,11):
print(i)
numbers = 0
n = 1
while numbers < 80:
numbers = 3 + (n-1)*13
print(numbers)
n = n + 1
## outputs are supposed to be:
3
16
29
42
55
68
81
nums = ['38', '45', '67', '83', '78']
num1 = nums[0]
for x in nums :
if x < num1:
num1 = x
print("The minimum number in the array is " + str(num1))
import getpass, sys
import random
def ask_question (question, answer):
print(question)
ans = input(question)
print(ans)
if ans == answer:
print("Correct!")
return 1
else:
print("Wrong")
return 0
question_list = ["What allows a value to be inserted into a list at index i?" , "What allows an element at index i to be deleted from a list?" , "What returns the number of elements currently in a specific list?" , "What allows a value to be added at the end of a list?"]
answer_list = ["index()", "remove()", "length()" , "append()"]
# Set points to 0 at the start of the quiz
points = 0
# If the length of the quiz is greater than 0, then random questions will be chosen from the "question_list" set
while len(question_list) > 0:
index = random.randint(0, len(question_list) - 1)
# The points system where a point is rewarded for each correct answer
points = points + ask_question(question_list[index], answer_list[index])
# If a question or answer has already been used, then it shall be deleted
del question_list[index]
del answer_list[index]
# Calculating score using the points system and dividing it by the total number of questions (6)
score = (points / 4)
# Calculating the percentage of correct answers by multiplying the score by 100
percent = (score * 100)
# Printing the percentage, and formatting the percentage in a way where two decimals can be shown (through "{:.2f}")
print("{:.2f}".format(percent) + "%")
# Adding final remarks based upon the users given scores
if points >= 5:
print("Your total score is: ", points, "out of 4. Amazing job!")
elif points == 4:
print("Your total score is: ", points, "out of 4. Not too bad, keep on studying! " )
else:
print("Your total score is: ", points, "out of 4. Its alright, better luck next time!")