1. Write a program, which given a number n = 1, 2, 3, ..., 10, creates a file named `table_n.txt` with the multiplication table of n 2. Write a program, which given a number n = 1, 2, 3, ..., 10, reads the file named `table_n.txt` and prints the numbers

program1.py

# Take in input from the user.
while True:
    num = None
    # Check if the input is a valid integer.
    try:
        # Take in input from the user.
        num = input("Input a number: ")
        int(num)  # Try to turn input into an integer
    except ValueError:
        print("Please input a correct integer.")
        continue

    num = int(num)
    if not (0 < num < 11):
        print("Please input an integer in the range from 1 to 10.")
        continue

    break

# Open the file "timestable_n.txt" with mode of "w" to completely
# wipe the file each time the program is ran.
with open("timestable_n.txt", "w") as f:
    for n in range(1, 10 + 1):
        # Using an f string makes the code way easier to read.
        f.write(f"{num} x {n} = {num * n}\n")
        print(f"{num} x {n} = {num * n}")

program2.py

import os


if not os.path.exists("timestable_n.txt"):
    print("The file \"timestable_n.txt\" does not exist in the current directory. \
           Please run the first program before running this one.")
    exit(1)

while True:
    num = None
    # Check if the input is a valid integer.
    try:
        # Take in input from the user.
        num = input("Input a number: ")
        int(num)
    except ValueError:
        print("Please input a correct integer.")
        continue

    num = int(num)
    if not (0 < num < 11):
        print("Please input an integer in the range from 1 to 10.")
        continue

    break

# Open the file "timestable_n.txt" with mode of "r" to read the file.
with open("timestable_n.txt", "r") as f:
    # Read the file.
    data = f.read()
    # Get each line of the file to be able take the index to find the requested multiplication.
    lines = data.split("\n")
    index = num - 1
    line = lines[index]

    # Editor's note: If you only need the result and not the whole equation use this code -->
    # From the line, we can get the result by getting the last integer in the line.
    objects = line.split(" ")
    result_string = objects[-1]
    result = int(result_string)
    print("The result is:", result)

    # Here's the code to get the whole equation.
    print(line)