Question

Write a program that writes a series of random numbers to a file. Each random number should be in the range of 1 through 500 inclusive.

1.Use a file called randoms.txt as a input file and output file

a. If you go to open the file and its not there then ask the user to create the file

    and then quit

2. Ask the user to specify how many random numbers the file will hold.

a.Make sure that the user input is > 1 and < 5000 inclusive.

b.Properly handle any bad input such as a floating point number, a negative number or String input.

c. If the user specifies bad input output an error message and ask the user to for input again.

3. Once the output is complete. Close the file and open it for reading.

a. Read all of the random number from that file and display:

     i. The total of the numbers,

    ii. the average of all the numbers,

                 iii. the largest and smallest numbers

                    iv. and the number of random numbers read from the

so far i have come up with the generator using the while loop:

here is the code:

import random

random_numbers = open('randoms.txt', 'r')
while True:

    try:
        qty_numbers = int(input('how many random numbers should be written to the file: '))
        if qty_numbers < 0:
            Error = ValueError('Number should be between 1-500')
            raise Error
            print(qty_numbers)

    except ValueError:
        print('Please enter a valid number')

    else:
        if 0 < qty_numbers < 5001:
            valid = True



    random_numbers = open ('ran_numbers.txt','w')

    print('Your list of random numbers are: ')
    # create a loop to generate the random numbers in the quantity specified
    for count in range(qty_numbers):
        number = random.randint(1, 500)
        # print the list of random numbers
        print(number)
        # convert the numbers to a string and write them to the file
        random_numbers.write(str(number) + '\n')
    total = 0
    count = 0
    with open('randoms.txt', 'r') as f:
        for line in f:
            total += int(line.strip())
            count += 1

    print("Total of the numbers is " + str(total))
    print("Number of random numbers read from the file is " + str(count))

the output is :

how many random numbers should be written to the file: 3
Your list of random numbers are:
407
175
267
Total of the numbers is 0
Number of random numbers read from the file is 0
how many random numbers should be written to the file:

Answer 1

import random
proceed=False
while not proceed:
proceed=True
try:
qty_numbers = int(input('how many random numbers should be written to the file: '))
if qty_numbers<1 or qty_numbers>5000:
print('Please enter a number between [1,5000]')
proceed=False
except ValueError:
print('Please enter a valid number')
proceed=False

random_numbers = open ('ran_numbers.txt','w')
for count in range(qty_numbers):
number = random.randint(1, 500)
# print the list of random numbers
#print(number) #no need to print
# convert the numbers to a string and write them to the file
random_numbers.write(str(number) + '\n')
random_numbers.close()
print("Numbers were successfully written in the file. Now reading it to show the required details...")
total = 0
count = 0
largest=1
smallest=500
with open('ran_numbers.txt', 'r') as f:
for line in f:
if (len(line.strip())>0):
num=int(line.strip())
total += num
count += 1
if num>largest:
largest=num
if num<smallest:
smallest=num

print("Total of the numbers is " + str(total))
print("Average of the numbers is " + str(total/count))
print("Largest of the numbers is " + str(largest))
print("Smallest of the numbers is " + str(smallest))
print("Number of random numbers read from the file is " + str(count))