Question

USING PYTHON

Open a file my_file.txt for reading.
Read the numbers in the file using a for loop
Determine the average of all the numbers in the file and print it to console, rounded to two decimal places.
Close the file
make sure to put your code in main function.

Answer 1

To find the average of numbers in a file using Python, open the file, use a for loop to read and sum the numbers, count the total entries, and then divide the sum by the count. Print the result with two decimal places.

Step-by-step explanation:

To calculate the average of numbers in a file using Python, you need to open the file, read the numbers, and perform calculations accordingly. Here is an example of how you can achieve this within the main function:

def main():
total_sum = 0
count = 0
with open('my_file.txt', 'r') as file:
for line in file:
try:
number = float(line)
total_sum += number
count += 1
except ValueError:
# Handle the exception if the line is not a number
print(f'Unable to convert {line} to a number. Skipping...')

if count > 0:
average = total_sum / count
print(f'The average is {average:.2f}')
else:
print('No numbers found in the file.')

if __name__ == '__main__':
main()

This code snippet includes the whole process: opening the file, reading numbers, calculating the average, and closing the file implicitly by using the with statement. The average is printed with two decimal places as requested.