Low Level Printing in Python

python_printing.py

import time
import sys
import itertools

# inspired by tqdm https://github.com/tqdm/tqdm
class ConsolePrinter:
    def __init__(self, file):
        self.prev_line_len = 0
        self.file = file
    def write(self, s):
        self.file.write('\r' + s + (' ' * max(self.prev_line_len - len(s), 0)) )
        self.prev_line_len = len(s)
# https://stackoverflow.com/questions/287871/print-in-terminal-with-colors
bcolors = {
    'HEADER': '\033[95m',
    'OKBLUE': '\033[94m',
    'OKGREEN': '\033[92m',
    'WARNING': '\033[93m',
    'FAIL': '\033[91m',
    'ENDC': '\033[0m',
    'BOLD': '\033[1m',
    'UNDERLINE': '\033[4m',
}
printer = ConsolePrinter(sys.stdout)
for length, color in zip(itertools.cycle(range(10)), itertools.cycle(bcolors.keys())):
    printer.write(bcolors[color] + '*' * length + bcolors['ENDC'])
    time.sleep(1)