completed up to exercise 10: using data and time

01 Calculate using Python/exercise-01.py

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+print(50-5*6)
+print((50-5*6)/4)
+print(8/5)
+print(4*3)
+print(12/3)
+print(21&6)
+print(17//5)
+print(5*3+2)
+print(5**2)
+print(1//2)

02 Variables and Assignment/exercise-02.py

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+from decimal import Decimal
+import math
+
+# Use Decimal for bcd (binary coded decimal) to avoid floating point errors
+radius = Decimal('6.7')
+
+pi = Decimal(str(math.pi))
+
+area = pi * (radius ** 2)
+
+print(f"{area}cm²")

02 Variables and Assignment/exercise-03.py

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+
+name = input("Please enter your name: ").split(" ")
+forename = name[0]
+surname = name[-1] # handle the case where a middle name is supplied
+
+age = int(input("How old are you? "))
+
+height = int(input("How tall are you (cm)? "))
+
+def display_info(forename, surname, age, height):
+    print(f"Hello {forename.capitalize()} {surname.capitalize()}! You are {age} years old and {height}cm tall.")
+    # uthman fatih to ufatih
+    print(f"Your username is {forename.lower()[0]}{surname.lower()}")
+
+display_info(forename, surname, age, height)

03 Strings/exercise-01.py

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+name = input("Please enter your name: ").split(" ")
+for i in range(len(name)):
+    name[i] = name[i].capitalize()
+name = " ".join(name)
+print(f"Hello {name}! \nI hope you are doing well.")

03 Strings/exercise-02.py

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+numbers = input("Please enter two numbers: ")
+
+# if numbers variable containers , split by , else split by space
+if "," in numbers:
+    numbers = numbers.split(",")
+else:
+    numbers = numbers.split(" ")
+    
+# exit if len(numbers) != 2
+if len(numbers) != 2:
+    print("Please enter two numbers")
+    exit()
+    
+# convert to int
+for i in range(len(numbers)):
+    numbers[i] = int(numbers[i])
+    
+# calculate the average
+average = sum(numbers) / len(numbers)
+
+print(f"The average of {numbers[0]} and {numbers[1]} is {average}")

03 Strings/exercise-03.py

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+# Prompt user to enter a key number between 1 and 26
+# output the original string and encrypted string
+
+print(r"""
+_________                                     
+\_   ___ \_____    ____   ___________ _______ 
+/    \  \/\__  \ _/ __ \ /  ___/\__  \\_  __ \
+\     \____/ __ \\  ___/ \___ \  / __ \|  | \/
+ \______  (____  /\___  >____  >(____  /__|   
+        \/     \/     \/     \/      \/       
+      """)
+
+original = """
+If he had anything confidential to say,
+he wrote it in cipher,
+that is, by so changing the order of the letters of the alphabet,
+that not a word could be made out.
+"""
+
+key = int(input("Please enter a key number between 1 and 26: "))
+
+if key < 1 or key > 26:
+    print("Please enter a key number between 1 and 26")
+    exit()
+    
+encrypted = ""
+
+for i in range(len(original)):
+    if original[i].isalpha():
+        if original[i].isupper():
+            encrypted += chr((ord(original[i].lower()) - ord('a') + key) % 26 + ord('A'))
+        else:
+            encrypted += chr((ord(original[i].lower()) - ord('a') + key) % 26 + ord('a'))
+    else:
+        encrypted += original[i]
+        
+print(f"The original string is: {original}")
+print(f"\nThe encrypted string is: {encrypted}")

04 Basic Function/BasicFunction1.py

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+def add(a, b):
+    """ add a and b and print the output """
+    print(a + b) # print the result
+
+x = 17
+y = 22
+
+add(x, y)
+
+def multiply_divide(a, b, z):
+    """ multiply a and b and divide by z """
+    return(a * b / z) # return the result
+
+x = 6
+y = 4
+z = 8
+
+print(multiply_divide(x, y, z))

05 Extend Basic Function/exercise-01.py

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+def multiply_divide(a, b, z):
+    """ multiply a and b and divide by z """
+    return(a * b / z) # return the result
+
+x = 15
+y = 13
+z = 5
+
+print(multiply_divide(x, y, z))

05 Extend Basic Function/exercise-02.py

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+def thanks(inp):
+    """ print a string and follow it by 'You're welcome' """
+    print(inp + " You're welcome")
+
+thanks("There are only 10 types of people in the world.")

06 Returning Values/exercise-01.py

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+def get_name():
+    """ ask for a name and return it """
+    name = input("What is your name? ")
+    return name
+
+def get_cs_teacher_name():
+    """ ask for a students cs teacher's name and return it """
+    name = input("What is your CS teacher's name? ")
+    return name
+
+def average_homework():
+    """ get the score out of 10 for the last 4 homework assignments and average them """
+    test_scores = []
+    for i in range(4):
+        score = int(input("What is the score for assignment " + str(i+1) + "? "))
+        test_scores.append(score)
+        
+    return sum(test_scores)/4
+
+name = get_name()
+teacher_name = get_cs_teacher_name()
+average = average_homework()
+
+# if average >= 8: well done {name}, {teacher_name} is very pleased with your effort
+# if average >= 6 > 8: A good effort {name}, {teacher_name} thinks you should check your work carefully
+# if average >= 5: {name} this is very poor, {teacher_name} has asked you to try harder
+
+if average >= 8:
+    print(f"Well done {name}, {teacher_name} is very pleased with your effort")
+elif average >= 6:
+    print(f"A good effort {name}, {teacher_name} thinks you should check your work carefully")
+elif average >= 5:
+    print(f"{name} this is very poor, {teacher_name} has asked you to try harder")

07 Relational and Logical Operators/exercise-01.py

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+print(23!=15)
+print(5+3<10)
+print(6>10==10<2)

07 Relational and Logical Operators/exercise-02.py

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+a = 3
+b = 8
+
+print(a<b)
+print(6 >= a)
+print(b > a == False)
+print(True !=(a==b))

07 Relational and Logical Operators/exercise-03.py

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+c = True
+d = False
+
+print(c and d)
+print(not c or d)
+print(c == d and True)

08 IF&ELIF Statements/exercise-01.py

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+running = True
+
+while running:
+    num = int(input("Enter a number between 1 and 20: "))
+    if num < 1:
+        print("Incorrect entry. Number NOT between 1 & 20.")
+        continue
+    elif num > 20:
+        print("Incorrect entry. Number NOT between 1 & 20.")
+        continue
+    
+    print("Thank you. Number within correct range.")
+    running = False
+    

08 IF&ELIF Statements/exercise-02.py

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+# get names of two football teams and their scores
+# 3 points if they win, 1 for draw, 0 for loss
+
+WIN = 3
+DRAW = 1
+LOSS = 0
+
+team1 = input("Enter the name of the first team: ")
+team2 = input("Enter the name of the second team: ")
+score1 = int(input("Enter the score of the first team: "))
+score2 = int(input("Enter the score of the second team: "))
+
+if score1 > score2:
+    print(f"{team1} wins with a score of {WIN}")
+    print(f"{team2} loses with a score of {LOSS}")
+elif score1 < score2:
+    print(f"{team2} wins with a score of {WIN}")
+    print(f"{team1} loses with a score of {LOSS}")
+else:
+    print(f"The teams tied with a score of {DRAW}")

09 While and For Loops/exercise-01.py

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+# enter number between 1 and 12 print times tables
+
+num = int(input("Enter a number between 1 and 12: "))
+
+if num < 1 or num > 12:
+    print("Incorrect entry. Number NOT between 1 & 12.")
+    exit()
+    
+for i in range(1, 13):
+    print(f"{num} x {i} = {num * i}")

09 While and For Loops/exercise-02.py

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+def calculate_sum():
+    """Continuously prompts for numbers using a while loop until 0 is entered."""
+    total = 0
+    while True:
+        num = float(input("Enter a number (or 0 to finish): "))
+        if num == 0:
+            break
+        total += num
+    return total
+
+def display_total(total_value):
+    """Displays the final calculated sum using parameter passing."""
+    if total_value.is_integer():
+        print(f"\nThe final total is: {int(total_value)}")
+    else:
+        print(f"\nThe final total is: {total_value}")
+
+def main():
+    final_sum = calculate_sum()
+    display_total(final_sum)
+
+if __name__ == "__main__":
+    main()

10 Using Data and Time/exercise-01.py

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+import time
+