Print Text 'Loading' with dots going forward and backward in python shell

Question

I want to print Text \'Loading...\' But its dots would be moving back and forward (in shell).

I am creating a text game and for that it will look b

Answer 1

I believe the following code is what you are looking for. Simply thread this in your script, and it will flash dots while the user is waiting.

################################################################################
"""
Use this to show progress in the terminal while other processes are runnning
                        - show_running.py -
"""
################################################################################
#import _thread as thread
import time, sys

def waiting(lenstr=20, zzz=0.5, dispstr='PROCESSING'):
    dots   = '.' * lenstr
    spaces = ' ' * lenstr
    print(dispstr.center(lenstr, '*'))
    while True:
        for i in range(lenstr):
            time.sleep(zzz)
            outstr = dots[:i] + spaces[i:]
            sys.stdout.write('\b' * lenstr + outstr)
            sys.stdout.flush()

        for i in range(lenstr, 0, -1):
            time.sleep(zzz)
            outstr = dots[:i] + spaces[i:]
            sys.stdout.write('\b' * lenstr + outstr)   
            sys.stdout.flush()  
#------------------------------------------------------------------------------#
if __name__ == '__main__':
    import _thread as thread
    from tkinter import *

    root = Tk()
    Label(root, text="I'm Waiting").pack()

    start = time.perf_counter()

    thread.start_new_thread(waiting, (20, 0.5))

    root.mainloop()

    finish = time.perf_counter()
    print('\nYour process took %.2f seconds to complete.' % (finish - start))