Created
January 16, 2017 21:45
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Like my head, this also keeps spinning..
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def spin_it(message, frames=('|', '\\', '-', '/'), delay_scale=1): | |
"""Decorator for printing a message and then start the spinner""" | |
def inner(function): | |
def do_function(*args, **kwargs): | |
sys.stdout.write(message) | |
spinner = Spinner(frames=frames, delay=delay_scale) | |
spinner.start() | |
with io.StringIO() as strout: | |
with contextlib.redirect_stdout(strout): | |
output = function(*args, **kwargs) | |
out = strout.getvalue() | |
spinner.stop() | |
sys.stdout.write('\n') | |
sys.stdout.write(out) | |
return output | |
return do_function | |
return inner | |
class Spinner: | |
"""Super simple CLI spinner""" | |
def __init__(self, frames=('|', '\\', '-', '/'), delay=1, stream=None): | |
self.frames = it.cycle(frames) | |
self.number_of_frames = len(frames) | |
self.delay = delay | |
self.stream = sys.stdout if stream is None else stream | |
self.is_running = True | |
self.thread = None | |
def start(self): | |
def do_it(): | |
while self.is_running: | |
self.stream.write(next(self.frames)) | |
self.stream.flush() | |
time.sleep(1 / self.number_of_frames * self.delay) | |
self.stream.write('\b') | |
self.thread = threading.Thread(target=do_it) | |
self.thread.start() | |
def stop(self): | |
self.is_running = False | |
self.thread.join() |
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