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BERHASIL DIUBAH!

EDITING: video_demo.py

#
# video_demo.py
#
# Simple statemachine demo, based on the state transitions given in videostate.pystate
#

import statemachine
import videostate

class Video(videostate.VideoStateMixin):
    def __init__(self, title):
        self.initialize_state(videostate.Stopped)
        self.title = title

# ==== main loop - a REPL ====

v = Video("Die Hard.mp4")

while True:
    print(v.state)
    cmd = (
        input("Command ({})> ".format("/".join(videostate.VideoState.transition_names)))
        .lower()
        .strip()
    )
    if not cmd:
        continue

if cmd in ("?", "h", "help"):
        print("enter a transition {!r}".format(videostate.VideoState.transition_names))
        print(" q - quit")
        print(" ?, h, help - this message")
        continue

# quitting out
    if cmd.startswith("q"):
        break

# get transition function for given command
    state_transition_fn = getattr(v, cmd, None)

if state_transition_fn is None:
        print("???")
        continue

# invoke the input transition, handle invalid commands
    try:
        state_transition_fn()
    except videostate.VideoState.InvalidTransitionException as e:
        print(e)