Script to show print buffer in Python's print function.

buffer.py

'''This scripts aims to demonstrate the behavior of the `flush` parameter
in Python's `print` function. The for-loop below should produce
the following output:

    0123456789

You may modify `END` to change this.
Set `IS_BUFFERED` to True to change the manner in which `i` is printed.

Lastly, you may experiment with running this script with -u flag.
`python -u buffer.py`

You may also experiment with manually setting the environment variable
PYTHONUNBUFFERED either via command line or via os.environ.'''

from time import sleep

IS_BUFFERED = False 
END = ""

# import os
# os.environ['PYTHONUNBUFFERED'] = ""
# print(f"{os.getenv('PYTHONUNBUFFERED') = }")

for i in range(10):
    print(i, end=END, flush=IS_BUFFERED)
    sleep(0.5)

rich_hello_world.py

from rich import print
print("[white on red] Hello [/] [green]World!")