Week4-File-I-O-Exception-Handling G

alphabet.txt

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+abcd
+efgh
+ijkl
+mnop
+qrst
+uvwx
+yzAB
+CDEF
+GHIJ
+KLMN
+OPQR
+STUV
+WXYZ

homework_1.py

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+### Question 1
+"""Letters for each line
+Write a Python program to create a file where all letters of English 
+alphabet(uppercase and lowercase both) are listed by specified number of letters on each line.
+"""
+
+letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+def letters_file_line(n):
+
+    with open("alphabet.txt", "w") as f:
+        for i, letter in enumerate(letters):
+            f.write(letter)
+            if (i + 1) % n == 0:
+                f.write("\n")
+
+letters_file_line(4)

homework_2.py

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+"""Question 2
+Write a Python program to generate 26 text files named A.txt, B.txt, and so on up to Z.txt."""
+
+import string, os  # import string and os.path 
+
+""" First define a function file_generaters which generates a text file for each letter of the uppercase alphabet. """
+
+def file_generaters():
+    """if a directory named "letters" exists and 
+    creates it if it doesn't using the os.makedirs function."""
+
+    if not os.path.exists("letters"): 
+        os.makedirs("letters") 
+
+    """This for loop will for each leter in the upercase alphabet, defined by string.ascii_uppercase, the code 
+    creates a text file with the name of the letter and writes to the letters as its contents using the with statement
+    and the open functiion. """ 
+
+    for letter in string.ascii_uppercase:
+
+        with open(letter + ".txt", "w") as f:
+            f.writelines(letter)
+file_generaters() # function is called to generate the file names

homework_3.py

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+### Question 3
+"""As a user, I want to use a program which can calculate the least common multiple (L.C.M.) 
+of four numbers. So that I can find the least common multiple (L.C.M.) of my inputs.
+
+Acceptance Criteria:
+
+Ask user to enter the four numbers.
+Use try/except blocks to verify input entries and warn the user for Nan or non numerical inputs.
+Calculate the least common multiple (L.C.M.) of four numbers
+Use gcd function in module of math
+"""
+
+import math
+
+"""The 'main_func' function takes four numbers as input and returns the L.C.M. of these numbers."""
+def main_func(num1,num2,num3,num4):
+    #  Code that should be executed when the script is run as the main program
+    """The 'math.gcd' function from the 'math' library to calculate the greatest common divisor of two numbers, 
+    which is then used to calculate the L.C.M."""
+    return num1 * num2 * num3 * num4 // math.gcd(math.gcd(num1, num2), math.gcd(num3, num4))
+
+
+"""The code is executed only when the script is run as the main program, as 
+determined by the 'if name == 'main':' statement. Within this block, user input is obtained 
+for the four numbers and the 'main_func' is called with these inputs. The result is then printed to 
+the console. Exception handling is used to ensure that the input is a valid number.
+"""
+if __name__ == '__main__':
+
+    while True:
+        try:
+            n1 = int(input("Enter the first number:"))
+            n2 = int(input("Enter the seconde number:"))
+            n3 = int(input("Enter the third number:"))
+            n4 = int(input("Enter the fourth number:"))
+            break
+        except:
+            print("Invalid input. Pleass enter a number.")
+
+    r = main_func(n1, n2, n3, n4)
+    print("The least common multiple (L.C.M.) of four numbers:", r)
+
+
+
+
+
+
+

homework_4.py

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+### Question 4 
+""""" Mis Calculator
+As a user, I want to use a program which can calculate basic mathematical operations. So that I can add, subtract, multiply or divide my inputs.
+
+Acceptance Criteria:
+
+The calculator must support the Addition, Subtraction, Multiplication and Division operations.
+Define four functions in four files for each of them, with two float numbers as parameters.
+To calculate the answer, use math.ceil()  and get the next integer value greater than the result
+Create a menu using the print command with the respective options and take an input choice from the user.
+Using if/elif statements for cases and call the appropriate functions.
+Use try/except blocks to verify input entries and warn the user for incorrect inputs.
+Ask user if calculate numbers again. To implement this, take the input from user Y or N."""""
+
+
+from my_modules import *
+
+# Define the main function
+def main_func():
+
+    while True:
+
+        choice = input(""" Enter Your choice if you want to 
+                       for Addition write = add,
+                       for Subtraction= sub,
+                       for Multiplication = mult,
+                       for Division= div,
+                       :> """).lower()
+
+        # Try to retrieve the two numbers from the user input
+        try:
+            num1 = float(input("Enter the first number: "))
+            num2 = float(input("Enter the second number: "))
+
+        except ValueError:
+            print("Invalid input. Please enter a number.")
+            continue
+
+        # Check the user's choice and call the appropriate function from the imported module
+        if choice == "add":
+            r = add(num1, num2)
+            print("The result is ", r)
+        elif choice == "sub":
+            r = subtract(num1, num2)
+            print("The result is ", r)
+        elif choice == "mult":
+            r = multiply(num1, num2)
+            print("The result is ", r)
+        elif choice == "div":
+            r = divide(num1, num2)
+            print("The result is ", r)
+        # If the user's choice is invalid, show an error message and prompt again
+        else:
+            print("Invalid choice. Please try again.")
+            continue
+
+        # Ask the user if they want to calculate again
+        t = input("Do you want to calculate again? (y/n): ").lower()
+        # If the user doesn't want to calculate again, break out of the loop
+        if t != 'y':
+            break
+
+# Execute the main function when the script is run as the main program
+if __name__ == "__main__":
+    main_func()

letters/A.txt

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+A

letters/B.txt

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+B

letters/C.txt

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+C

letters/D.txt

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+D

letters/E.txt

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+E

letters/F.txt

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+F

letters/G.txt

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+G

letters/H.txt

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+H

letters/I.txt

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+I

letters/J.txt

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+J

letters/K.txt

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+K

letters/L.txt

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+L

letters/M.txt

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+M

letters/N.txt

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+N

letters/O.txt

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+O

letters/P.txt

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+P

letters/Q.txt

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+Q

letters/R.txt

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+R

letters/S.txt

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+S

letters/T.txt

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+T

letters/U.txt

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+U

letters/V.txt

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+V

letters/W.txt

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+W

letters/X.txt

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+X

letters/Y.txt

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+Y

letters/Z.txt

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+Z

my_modules.py

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+# add
+def add(a, b):
+    return a + b
+
+# subtract
+def subtract(a, b):
+    return a - b
+
+# multiply
+def multiply(a, b):
+    return a * b
+
+# divide
+def divide(a, b):
+    return a / b