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"""Tutorial 1 code.
This sample should print:
Hello: John
battery ok
battery dbl check
GripperInterface Open
approach_object: house
GripperInterface Close
"""
import curio
import async_btree as bt
async def approach_object(name: str):
print(f"approach_object: {name}")
def check_battery():
print("battery ok")
# you should return a success
return bt.SUCCESS
def check_again_battery():
print("battery dbl check")
async def say_hello(name: str):
# This method should be used with bt.always_success decorator
# no return as q falsy meaning
print(f"Hello: {name}")
class GripperInterface:
def __init__(self):
self._open = False
def open(self):
print("GripperInterface Open")
self._open = True
def close(self):
print("GripperInterface Close")
gripper = GripperInterface()
b_tree = bt.sequence(
children=[
bt.always_success(child=bt.action(target=say_hello, name="John")),
bt.action(target=check_battery),
check_again_battery, # this will be encapsulated at runtime
bt.always_success(child=bt.action(target=gripper.open)),
bt.always_success(child=bt.action(target=approach_object, name="house")),
bt.always_success(child=bt.action(target=gripper.close)),
]
)
if __name__ == '__main__':
curio.run(b_tree)
geronimo-iia /
async-btree
