micropython crashes with `print(">>> ", end='')` expression after roughly 0.02 seconds

[Kyuchumimo]

Checks

• I agree to follow the MicroPython Code of Conduct to ensure a safe and respectful space for everyone.

• I've searched for existing issues matching this bug, and didn't find any.

Port, board and/or hardware

rp2

MicroPython version

MicroPython v1.22.2 on 2024-02-22; Raspberry Pi Pico with RP2040

Reproduction

import time

print('>>> ',end='')

while True:
    time.sleep(0.02)
    
    print("THIS SHOULD BE PRINTED!")

Expected behaviour

">>> " string without new line printed on shell

Observed behaviour

For some unknown reason, I can't print exactly what I want, which should be ">>> " without new line escape sequence (\n).

A workaround is to print ">>> \b" (three greater-than signs followed by two spaces and a backspace escape sequence (\b)).

To avoid crashes you need to print something after the print('>>> ',end='') in a time span of roughly less than 0.02 seconds, but as I said before, that is not the goal, i want to print exactly ">>> " without newline or any aditional characters, which I consider to be a bug.

Additional Information

No, I've provided everything above.

[robert-hh]

No problem here, and no reason why it should crash. There is nothing in print which treats >>> different to any other characters. IDE's like Thonny do. If you use Thonny, it may be a Thonny problem. Please try without Thonny. use a simple terminal emulator like Putty or screen or picocom.

[Kyuchumimo]

Tested in PuTTY and it works correctly.
You are right, it is probably Thonny's problem that identifies ">>> " as an interactive prompt and does something different with it.