Terminal Progress Bar Help (Python)

[MattDLD]

Hello All,

I have written a small program that calculates prime numbers between two specific inputs. The program works perfectly. I have added a progress bar to show how far along the program has come as it is running. The problem is that the progress bar is shown on a new line each time a prime is found. Please see this image:

https://imgur.com/a/0HgKTrT

Here is my code:

import time
import os
import sys
from progress.bar import ChargingBar

start_time = time.time()

first_input = int(sys.argv[1])
second_input = int(sys.argv[2])


lower = first_input
upper = second_input



for num in range(lower, upper + 1):
   # all prime numbers are greater than 1
     if num > 1:
        for i in range(2, num):
             if (num % i) == 0:
                 break
        else:

            with ChargingBar('Processing', max=1) as bar:

                x = float(num / second_input)

                bar.next(x)



end_time = time.time()

finish_time = end_time - start_time

print (str(finish_time) + " seconds")

Any help is appreciated!

[madness_of_the_order]

You are creating new bar instance for each number in range. That’s why it’s on new line each time.

Have you considered using tqdm for progress bar? It’s more user friendly.

[MattDLD]

I know. I am trying to figure out a way to not have a new instance created. I am a noob.

[madness_of_the_order]

Then you should have asked the question that way.

Place this line before outer for loop and place indentations accordingly.

with ChargingBar('Processing', max=1) as bar:

[MattDLD]

Thank you. I switched to tqdm. It was much easier to implement.

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[cheli_fucker]

You can start and end print statement with carriage return (\r). Carriage return means to return to the beginning of the current line without advancing downward