Haftom_ Assignment_week_4

Arthimetics.py

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+from math import ceil
+def addition(number_1, number_2):
+    add = number_1 + number_2
+    return ceil(add)
+def subtruction(number_1, number_2):
+    sub = number_1 - number_2
+    return ceil(sub)
+def multiplication(number_1, number_2):
+    mul = number_1 * number_2
+    return ceil(mul)
+def division(number_1, number_2):
+    try:
+       divide = number_1 / number_2
+    except ZeroDivisionError as e:
+       return e
+    else:
+     return ceil(divide)

assignment_1.py

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+import string
+
+
+def write_alphabet(per_line):
+    """A function that accepts the number of letters per line
+    and writes all English alphabet letters (upper and lower) in to a
+    file name letters.txt. it works for any number of letters per line"""
+    with open("letters.txt", "w") as write_file:
+        all_letters = string.ascii_letters  # all alphabets given to all_letters
+        size = len(all_letters)
+        for letters in range(0, size - per_line + 1, per_line):
+            for index in range(letters, letters + per_line):
+                write_file.write(all_letters[index])
+            write_file.write("\n")
+        # this if clause is for perline which is not divident of 52
+        if size % per_line != 0:
+            write_file.write(all_letters[-(size % per_line) :])
+
+
+# the function will be called here
+try:
+    number_letters = int(input("Enter the number of letters per line:........ "))
+    if number_letters <= 0:
+        raise RuntimeError("Error: please enter a number > 0 ")
+except ValueError as e:
+    print(e)
+except RuntimeError as e:
+    print(e)
+else:
+    write_alphabet(number_letters)

assignment_2.py

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+import os
+import string
+for char in string.ascii_uppercase:
+ with open(f"{char}.txt", 'w'):
+     pass
+# the following code helps us to delete all the files created.
+delete = input("do you want to delete the files?......." )
+if delete in ["yes","Yes","y","Y"]:
+ for char in string.ascii_uppercase:
+   os.remove(f"{char}.txt" )

assignment_3.py

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+
+from math import gcd
+def lcm_numbers(*numbers):
+    """A function that accepts any size of numbers
+     and calculates lcm of the numbers according to:
+     lcm(a,b,c.....n) = lcm(lcm(a,b),c,d........n)"""
+    if len(numbers)==2:
+       return numbers[0] * numbers[1] // gcd(numbers[0], numbers[1])
+    else:
+        # since the argument passed to the function is a tuple, 
+        # we need to change it in to list first to modify it.
+        list_numbers = [] 
+        for i in numbers:
+         list_numbers.append(i)
+        # x holds always the lcm of a two number
+        x = lcm_numbers(list_numbers[0],list_numbers[1])
+        list_numbers.pop(0)
+        list_numbers.pop(0)
+        list_numbers.insert(0,x)
+        return lcm_numbers(*list_numbers)   
+
+numbers = input('Enter numbers separated by space\n').split(" ")
+try:
+ numbers = [int(i) for i in numbers]
+ if len(numbers) == 1:
+    raise ArithmeticError ("Error! the lcm of one number is the number itself")
+except ValueError as e:
+    print(e)
+except ArithmeticError as e:
+    print(e)
+else:
+ lcm_result = lcm_numbers(*numbers)
+ print(lcm_result)

assignment_4.py

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+from tkinter import ttk
+from Arthimetics import* # all the arthimetic functions are in one file.
+import tkinter as tk
+def calculator():
+    """A function that accepts two numbers and an operator from the user input fields
+       and perform the chosen operation on the two operands. Then display the result on 
+       the screen"""
+    try:
+       number_1 = float(number_1_entry.get())
+       number_2 = float(number_2_entry.get())
+    except ValueError:
+        print(result_display.config(text="Error! please enter a number"))
+    else:
+        operator = list_down.get()
+        if operator == "Addition":
+            result = addition(number_1,number_2)
+        elif operator == "Subtruction":
+            result = subtruction(number_1,number_2)
+        elif operator == "Multiplication":
+             result = multiplication(number_1,number_2)
+        else:
+            result = division(number_1,number_2)
+        result_display.config(text= result)
+
+root = tk.Tk()
+root.title("Simple Calculator")
+
+number_1_label = tk.Label(root, text="Enter First Number")
+number_1_label.grid(row= 0, column= 0, pady=10)
+number_1_entry = tk.Entry(root)
+number_1_entry.grid(row=0, column=1)
+
+number_2_label = tk.Label(root, text="Enter Second Number")
+number_2_label.grid(row= 1, column= 0)
+number_2_entry = tk.Entry(root)
+number_2_entry.grid(row=1, column=1)
+result_label = tk.Label(root, text="  =  ")
+result_label.grid(row= 2, column= 2)
+result_display = tk.Label(root, text="")
+result_display.grid(row=2, column=3)
+
+options = ["Addition","Subtruction","Multiplication","Division"] # list of operators to be chosen by the user.
+choose_arithmetic_label = tk.Label(root, text = "Choose an Operator ")
+choose_arithmetic_label.grid(row= 3, column= 0)
+list_down = ttk.Combobox(state= "readonly", values=options) 
+list_down.grid(row= 3, column= 1)
+generate_button = tk.Button(root, text="Go", command=calculator)
+generate_button.grid(row=4, column=1, columnspan=1,pady=10)
+
+root.mainloop()
+