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How to use get_logger method in lisa
Best Python code snippet using lisa_python
strategy.py
Source:strategy.py 
...63 self.x = msg.xmin64 self.y = msg.ymin65 self.w = msg.width66 self.h = msg.height67 #self.get_logger().info(('tolerance achieved'))68 #centerx = (2*x+w)/269 #centery = (2*y+h)/270 pass71 72 def hsv_center_check(self):73 ratio = float(self.h*1.0 / self.w)74 contours, hierarchy = cv.findContours(closing, cv.RETR_TREE, cv.CHAIN_APPROX_SIMPLE)75 for cntt in contours:76 cv.drawContours(res, cntt, -1, (0,255,255), 3) #yellow for all contours77 #area = cv.contourArea(cnt)78 #op = 079 if len(contours)!=0 :80 cnt = max(contours, key = cv.contourArea)81 area = cv.contourArea(cnt) 82 83 if area > 5000:84 self.get_logger().info(('currently ratio'+str(np.round(ratio,decimals=4))))85 if abs(ratio - self.pd_ratio) < 0.005:86 return True87 else:88 return False89 else :90 return False91 def check_z_distance(self):92 centery = (2*self.y+self.h)/293 if abs(centery-self.frame_height/2.0) < 1/10.0*self.frame_height:94 self.get_logger().info(('tolerance achieved'+str(int(abs(centery-self.frame_height/2.0)))))95 return True96 else:97 return False98 def z_adjust(self):99 centery = (2*self.y+self.h)/2100 self.z_adjust_vel = -(centery-self.frame_height/2.0)/self.frame_height *2101 mymsg = Twist()102 mymsg.linear.z = float(self.z_adjust_vel)103 self.gate_rotate_pub.publish(mymsg)104 105 def hover(self):106 msg = Twist()107 msg.angular.x = 0.0108 msg.linear.x = 0.0109 msg.angular.y = 0.0110 msg.linear.y = 0.0111 msg.angular.z = 0.0112 msg.linear.z = 0.0113 self.gate_rotate_pub.publish(msg)114 115 def check_az_distance(self):116 centerx = (2*self.x+self.w)/2117 if abs(centerx-self.frame_width/2.0) < 1/40.0*self.frame_width:118 self.get_logger().info(('tolerance achieved'+str(int(abs(centerx-self.frame_width/2.0)))))119 return True120 else:121 return False122 def az_adjust(self):123 centerx = (2*self.x+self.w)/2124 self.az_adjust_vel = -(centerx-self.frame_width/2.0)/self.frame_width/3.0125 mymsg = Twist()126 mymsg.angular.z = float(self.az_adjust_vel)127 self.gate_rotate_pub.publish(mymsg)128 def gate_rotate(self):129 self.ratio = float(self.h*1.0 / self.w)130 mymsg = Twist()131 mymsg.linear.x = 0.0132 mymsg.linear.z = 0.0133 # minimize134 diff = self.ratio - self.ratio_previous # first time diff>0135 if diff>0:136 self.rotate_dir = -self.rotate_dir # first time rotate_dir = -rotate_dir = 1.0137 mymsg.linear.y = self.gate_rotate_vel_y *self.rotate_dir138 mymsg.angular.z = self.gate_rotate_vel_az *self.rotate_dir139 self.gate_rotate_pub.publish(mymsg)140 self.ratio_previous = self.ratio141 pass142 def approach_complete_callback(self,req,res):143 self.get_logger().info(('tolerance achieved'))144 self.approach_flag = True145 return res146 def check_for_approach_two(self):147 148 149 pass150 def check_for_approach_flag(self):151 if self.approach_flag:152 #self.get_logger().info(('True'))153 self.approach_flag = False154 return True155 else:156 #self.get_logger().info(('False'))157 return False158 def flag_clean(self):159 self.approach_flag = False160 def send_takeoff_request(self): 161 start_request = TelloAction.Request()162 start_request.cmd = "takeoff"163 self.start_future = self.start_client.call_async(start_request)164 def send_rotate_request(self,flag):165 req = SetBool.Request()166 req.data = flag167 self.rotate_future = self.rotate_client.call_async(req)168 def send_forward_request(self,flag):169 req = SetBool.Request()170 req.data = flag171 self.forward_future = self.forward_client.call_async(req)172 def send_approach_request(self,flag):173 req = SetBool.Request()174 req.data = flag175 self.approach_future = self.approach_client.call_async(req)176 177 def send_flythrough_request(self):178 req = Empty.Request()179 self.flythrough_future = self.flythrough_client.call_async(req)180 def send_markerid_request(self,marker):181 req = MarkerId.Request()182 req.id = marker183 self.markerid_future = self.markerid_client.call_async(req)184 #def send_teleop_request(self,flag):185 # req = SetBool.Request()186 # req.data = flag187 # self.teleop_future = self.teleop_client.call_async(req)188 def hsv_check_center_horizontal(self):189 # rotate until x>1/10*frame.width, x+w<9/10*frame.width, abs(((x+w)+x)/2-frame.width)<1/10*frame.width 190 centerx = (2*self.x+self.w)/2191 centery = (2*self.y+self.h)/2192 if (self.x>1.0/10.0*self.frame_width)and((self.x+self.w)<9.0/10.0*self.frame_width)and((centerx-self.frame_width)<(1.0/10.0*self.frame_width)):193 self.get_logger().info('center testing approved')194 return True195 def hsv_check_center_height(self):196 # abs(h-desired_h)<1/20*frame.height197 if self.h>= 3.0/5.0/self.approach_ratio*self.frame_height:198 self.get_logger().info('distance testing approved')199 return True200def wait_for_takeoff_response(st):201 while rclpy.ok():202 rclpy.spin_once(st)203 if st.start_future.done():204 try:205 response = st.start_future.result()206 except Exception as e:207 st.get_logger().info((208 'Service call failed %r' % (e,)))209 210 break211 212def wait_rotate_response(st):213 while rclpy.ok():214 rclpy.spin_once(st)215 if st.rotate_future.done():216 try:217 response = st.rotate_future.result()218 except Exception as e:219 st.get_logger().info((220 'Service call failed %r' % (e,)))221 break222def wait_forward_response(st):223 while rclpy.ok():224 rclpy.spin_once(st)225 if st.forward_future.done():226 try:227 response = st.forward_future.result()228 except Exception as e:229 st.get_logger().info((230 'Service call failed %r' % (e,)))231 break232def wait_for_approach_response(st):233 while rclpy.ok():234 rclpy.spin_once(st)235 if st.approach_future.done():236 try:237 response = st.approach_future.result()238 except Exception as e:239 st.get_logger().info((240 'Service call failed %r' % (e,)))241 242 break243def wait_for_flythrough_response(st):244 while rclpy.ok():245 rclpy.spin_once(st)246 if st.flythrough_future.done():247 try:248 response = st.flythrough_future.result()249 except Exception as e:250 st.get_logger().info((251 'Service call failed %r' % (e,)))252 break253def wait_for_markerid_response(st):254 while rclpy.ok():255 rclpy.spin_once(st)256 if st.markerid_future.done():257 try:258 response = st.markerid_future.result()259 except Exception as e:260 st.get_logger().info((261 'Service call failed %r' % (e,)))262 break263#def wait_for_teleop_response(st):264# while rclpy.ok():265# rclpy.spin_once(st)266# if st.teleop_future.done():267# try:268# response = st.teleop_future.result()269# except Exception as e:270# st.get_logger().info((271# 'Service call failed %r' % (e,)))272# break273def search_for_AR_Tag(st,marker):274 find_artag1 = False275 while not find_artag1:276 try:277 now = rclpy.time.Time()278 st.trans = st.tf_buffer.lookup_transform(279 'tello_base',280 marker,281 now)282 find_artag1 = True283 except TransformException as ex:284 #st.get_logger().info(('not yet'))285 pass286 rclpy.spin_once(st)287def check_for_AR_Tag(st,marker):288 check_artag = False289 while not check_artag:290 try:291 now = rclpy.time.Time()292 st.trans = st.tf_buffer.lookup_transform(293 'tello_base',294 marker,295 now)296 check_for_artag = True297 except TransformException as ex:298 #st.get_logger().info(('not yet'))299 pass300 rclpy.spin_once(st)301def gate_artag_strategy(st,marker):302 # set marker_id for current_gate303 while not st.markerid_client.wait_for_service(timeout_sec=1.0):304 st.get_logger().info(('marker idservice not available, waiting again...'))305 st.send_markerid_request(marker)306 wait_for_markerid_response(st)307 st.get_logger().info(('currently finding Gate ..'+marker))308 # try to test ask 2 seconds, whether or not ARtag is found, if not, rotate again to find artag 309 # until st.check_for_approach_flag() True, break310 # y has steady error311 312 # rotate until find ARtag313 while not st.rotate_client.wait_for_service(timeout_sec=1.0):314 st.get_logger().info(('rotate service not available, waiting again...'))315 st.send_rotate_request(True)316 wait_rotate_response(st)317 st.get_logger().info(('start rotating, searching for artag now..'))318 search_for_AR_Tag(st,marker)319 st.get_logger().info(('ARtag1found, stop rotating..'))320 st.send_rotate_request(False)321 wait_rotate_response(st)322 st.get_logger().info(('successfully stopped'))323 st.get_logger().info("sofarsogood!")324 325 sleep(2)326 # approach ARtag327 st.get_logger().info("approaching ARtag!")328 while not st.approach_client.wait_for_service(timeout_sec=1.0):329 st.get_logger().info(('pid teleop service not available, waiting again...'))330 st.send_approach_request(True)331 wait_for_approach_response(st)332 while not st.check_for_approach_flag():333 rclpy.spin_once(st)334 sleep(0.5)335 #st.get_logger().info(('adjusting now...'))336 337 st.flag_clean()338 st.send_approach_request(False)339 wait_for_approach_response(st)340 st.get_logger().info("estimated approached,flythrough")341 342 sleep(5)343 #st.check_for_approach_two()344 #blind_fly_through345 346 st.get_logger().info("blind fly through ARtag!")347 while not st.flythrough_client.wait_for_service(timeout_sec=1.0):348 st.get_logger().info(('blind fly service not available, waiting again...'))349 st.send_flythrough_request()350 wait_for_flythrough_response(st)351 sleep(6)352 st.get_logger().info("already through ARtag!")353 pass354def hsv_gate_strategy(st):355 # stage 1: find the gate356 # rotate until x>1/10*frame.width, y+h<9/10*frame.width, abs(((x+w)+x)/2-frame.width)<1/10*frame.width 357 # call rotate service(SetBool), check for cv_pub in strategy358 359 st.get_logger().info(('try to find gate with hsv filter...'))360 while not st.rotate_client.wait_for_service(timeout_sec=1.0):361 st.get_logger().info(('rotate service not available, waiting again...'))362 st.send_rotate_request(True)363 wait_rotate_response(st)364 st.get_logger().info(('start rotating, searching for gate using hsv filter now..'))365 flag = False366 rclpy.spin_once(st)367 flag = st.hsv_check_center_horizontal()368 if st.hsv_check_center_horizontal():369 flag = True370 pass371 while not flag:372 rclpy.spin_once(st)373 flag = st.hsv_check_center_horizontal()374 pass375 376 st.get_logger().info(('Gate found, stop rotating..'))377 st.status_reset()378 st.send_rotate_request(False)379 wait_rotate_response(st)380 st.get_logger().info(('successfully stopped'))381 382 sleep(3)383 384 while not st.check_z_distance():385 rclpy.spin_once(st)386 st.z_adjust()387 st.get_logger().info(('z axis_adjusting..'))388 sleep(0.1)389 390 sleep(3)391 392 # keep height by making abs(((y+h)+y)/2 - frame.height)<1/10*frame.height393 # pid control, service disable tf_pub, enable pid_teleop394 # stage 2: approach the gate395 st.get_logger().info("approaching ARtag!")396 while not st.approach_client.wait_for_service(timeout_sec=1.0):397 st.get_logger().info(('pid teleop service not available, waiting again...'))398 st.send_approach_request(True)399 wait_for_approach_response(st)400 while(st.status==False):401 rclpy.spin_once(st)402 st.get_logger().info(('successfully through gate'))403 sleep(10)404 st.send_approach_request(False)405 # stage 2: approach the gate406 # slowly approch the gate until abs(h-desired_h)<1/20*frame.height407 #while not st.forward_client.wait_for_service(timeout_sec=1.0):408 # st.get_logger().info(('forward service not available, waiting again...'))409 #st.send_forward_request(True)410 #wait_forward_response(st)411 #st.get_logger().info(('start forwarding, searching for gate using hsv filter now..'))412 #flag = False413 #rclpy.spin_once(st)414 #flag = st.hsv_check_center_height()415 #if st.hsv_check_center_height():416 # flag = True417 # pass418 #while not flag:419 # rclpy.spin_once(st)420 # flag = st.hsv_check_center_height()421 # pass422 423 ##while not st.forward_client.wait_for_service(timeout_sec=1.0):424 # st.get_logger().info(('forward service not available, waiting again...'))425 #st.get_logger().info(('Gate approached, stop forwarding..'))426 #st.send_forward_request(False)427 #wait_forward_response(st)428 #st.get_logger().info(('successfully stopped'))429 430 ### az adjust431 #while not st.check_az_distance():432 # rclpy.spin_once(st)433 # st.az_adjust()434 # #st.get_logger().info(('z axis_adjusting..'))435 # sleep(0.1)436 437 #st.get_logger().info(('az successfully adjusted'))438 ## z adjust439 440 441 #st.get_logger().info(('z successfully adjusted 2'))442 #hoveriing443 #count = 0 444 #while count<200:445 # count=count+1446 # st.hover()447 # rclpy.spin_once(st)448 449 #st.get_logger().info(('sofarsogood3'))450 ### az adjust451 #while not st.check_az_distance():452 # rclpy.spin_once(st)453 # st.az_adjust()454 # #st.get_logger().info(('z axis_adjusting..'))455 # sleep(0.1)456 457 #st.get_logger().info(('az successfully adjusted'))458 #hoveriing459 #count = 0 460 #while count<200:461 ## count=count+1462 # st.hover()463 # rclpy.spin_once(st)464 # stage 3: center to the gate465 # rotate around the gate until abs(ratio-desired_ratio)<1/20*frame.height466 # strategy give out vel?467 468 #while not st.hsv_center_check():469 # st.gate_rotate()470 # rclpy.spin_once(st)471 # sleep(1/5)472 # st.get_logger().info(('rotating around the gate now'))473 474 #hoveriing475 # count = 0 476 # while count<200:477 # count=count+1478 # st.hover()479 # rclpy.spin_once(st)480 #st.get_logger().info(('center the gate successfully'))481 # stage 4: blindly fly through it482 #while not st.forward_client.wait_for_service(timeout_sec=1.0):483 # st.get_logger().info(('forward service not available, waiting again...'))484 #st.send_forward_request(True)485 #wait_forward_response(st)486 #st.get_logger().info(('start forwarding, searching for gate using hsv filter now..'))487 # done!488 #pass489 #sleep(20)490 #while not st.forward_client.wait_for_service(timeout_sec=1.0):491 # st.get_logger().info(('forward service not available, waiting again...'))492 #st.get_logger().info(('Gate approached, stop forwarding..'))493 #st.send_forward_request(False)494 #wait_forward_response(st)495 #st.get_logger().info(('successfully stopped'))496def main(args=None):497 rclpy.init(args=args) 498 st = strategy()499 st.get_logger().info(("preparing111"))500 sleep(5)501 #disable joy_stick_teleop502 #while not st.teleop_client.wait_for_service(timeout_sec=1.0): 503 # st.get_logger().info(('teleop service not available, waiting again...'))504 #st.send_teleop_request(False)505 #wait_for_teleop_response(st)506 #st.get_logger().info(('teleop disabled'))507 508 # take off509 510 while not st.start_client.wait_for_service(timeout_sec=1.0): 511 st.get_logger().info(('take off service not available, waiting again...'))512 st.send_takeoff_request()513 wait_for_takeoff_response(st)514 st.get_logger().info(('successfully taken off'))515 516 sleep(5)517 #gate_artag_strategy(st,'marker1')518 #st.get_logger().info("sofarsogood1!")519 520 #gate_artag_strategy(st,'marker2')521 #gate_artag_strategy(st,'marker3')522 #st.get_logger().info("sofarsogood2!")523 while(True):524 hsv_gate_strategy(st)525 526 # logic + 527 # if I lost the view of ARtag, I have to rotate to find it again528 #disable joy_stick_teleop529 #while not st.teleop_client.wait_for_service(timeout_sec=1.0): 530 # st.get_logger().info(('service not available, waiting again...'))531 #st.send_teleop_request(True)532 #wait_for_teleop_response(st)533 rclpy.spin(st)534 st.destroy_node()535 rclpy.shutdown()536if __name__ == '__main__':...
snake_tf2_listener.py
Source:snake_tf2_listener.py
...16 super().__init__('snake_tf2_frame_listener')17 # For the background color change18 self.color_client = self.create_client(SetParameters, '/sim/set_parameters')19 while not self.color_client.wait_for_service(timeout_sec=1.0):20 self.get_logger().info('service not available, waiting again...')21 self.req = None22 23 try:24 # Declare and acquire `target_frame` parameter25 self.declare_parameter('target_frame', 'turtle1')26 27 # The parameter received should be the adequate tail (one tail per body)28 self.target_frame = self.get_parameter(29 'target_frame').get_parameter_value().string_value30 except:31 self.get_logger().info(32 'Listener was not launched from launch file'33 )34 self.target_frame = 'turtle1'35 self.tf_buffer = Buffer()36 self.tf_listener = TransformListener(self.tf_buffer, self)37 # Create a client to spawn a turtle38 self.spawner = self.create_client(Spawn, 'spawn')39 # Boolean values to store the information40 # if the service for spawning turtle is available41 self.turtle_spawning_service_ready = False42 # if the turtle was successfully spawned43 self.body_spawned = False44 self.body_name = 'body1'45 self.start_position = [start_x, start_y, start_theta]46 # Create turtle2 velocity publisher47 self.publisher = self.create_publisher(Twist, f'{self.body_name}/cmd_vel', 1)48 # Call on_timer function every second49 # Maybe increase the rate50 self.timer = self.create_timer(0.01, self.on_timer)51 52 # Variable controlling if the snake has eaten the body53 self.body_eaten = False # Must be set to False54 55 def on_timer(self):56 # Store frame names in variables that will be used to57 # compute transformations58 from_frame_rel = self.target_frame59 to_frame_rel = self.body_name60 if self.turtle_spawning_service_ready:61 if self.body_spawned and self.body_eaten:62 # Look up for the transformation between target_frame and turtle2 frames63 # and send velocity commands for turtle2 to reach target_frame64 try:65 now = rclpy.time.Time()66 trans = self.tf_buffer.lookup_transform(67 to_frame_rel,68 from_frame_rel,69 now)70 except TransformException as ex:71 self.get_logger().info(72 f'EATEN: Could not transform {to_frame_rel} to {from_frame_rel}: {ex}')73 return74 except (LookupException, ConnectivityException, ExtrapolationException):75 self.get_logger().info('EATEN: transform not ready')76 return77 msg = Twist()78 # Diference between both Theta values79 # theta_diff = abs(1 - abs(trans.transform.rotation.w))80 ang_diff = math.atan2(81 trans.transform.translation.y,82 trans.transform.translation.x)83 84 dist = math.sqrt(85 abs(trans.transform.translation.x) ** 2 +86 abs(trans.transform.translation.y) ** 2)87 88 if ang_diff*180/math.pi >= 15 and dist > 0.1:89 90 scale_rotation_rate = 691 msg.angular.z = scale_rotation_rate * ang_diff92 93 scale_forward_speed = 1.594 msg.linear.x = scale_forward_speed * dist95 self.get_logger().info(96 f'Chasing target: ')97 self.get_logger().info(98 f'Linear Speed: {msg.linear.x}')99 self.get_logger().info(100 f'Angular Speed: {msg.angular.z}')101 self.get_logger().info(102 f'distance: {dist}')103 self.get_logger().info(104 f'Angle difference:{ang_diff*180/math.pi}')105 106 elif ang_diff*180/math.pi < 15 and dist > 0.1:107 108 scale_rotation_rate = 3109 msg.angular.z = scale_rotation_rate * ang_diff110 111 scale_forward_speed = 3112 msg.linear.x = scale_forward_speed * dist113 self.get_logger().info(114 f'Full Speed: ')115 self.get_logger().info(116 f'Linear Speed: {msg.linear.x}')117 self.get_logger().info(118 f'Angular Speed: {msg.angular.z}')119 self.get_logger().info(120 f'distance: {dist}')121 self.get_logger().info(122 f'Angle difference:{ang_diff*180/math.pi}')123 else:124 self.get_logger().info(125 f'STOP target is close: ')126 self.get_logger().info(127 f'Linear Speed: {msg.linear.x}')128 self.get_logger().info(129 f'Angular Speed: {msg.angular.z}')130 self.get_logger().info(131 f'distance: {dist}')132 self.get_logger().info(133 f'Angle difference:{ang_diff*180/math.pi}')134 135 self.publisher.publish(msg)136 137 138 elif not self.body_spawned:139 if self.result.done():140 self.get_logger().info(141 f'Successfully spawned {self.result.result().name}')142 self.body_spawned = True143 else:144 self.get_logger().info('Spawn is not finished')145 146 elif not self.body_eaten: 147 try:148 now = rclpy.time.Time()149 trans = self.tf_buffer.lookup_transform(150 to_frame_rel,151 from_frame_rel,152 now)153 154 distance = math.sqrt(155 abs(trans.transform.translation.x**2) + 156 abs(trans.transform.translation.y**2))157 # self.get_logger().info(158 # f'current distance to {self.body_name} is {distance} m')159 160 if distance < 1:161 self.body_eaten = True162 self.get_logger().info163 (f'Piece {self.body_name} EATEN, ÃAM ÃAM')164 self.change_background_color()165 166 except TransformException as ex:167 self.get_logger().info(168 f'NOT EATEN: Could not transform {to_frame_rel} to {from_frame_rel}: {ex}')169 return170 except (LookupException, ConnectivityException, ExtrapolationException):171 self.get_logger().info('NOT EATEN: transform not ready')172 return173 else:174 spawn_result = self.body_spawner()175 if spawn_result is not None:176 self.result = spawn_result177 def body_spawner(self):178 if self.spawner.service_is_ready():179 # Initialize request with turtle name and coordinates180 # Note that x, y and theta are defined as floats in turtlesim/srv/Spawn181 request = Spawn.Request()182 request.name = 'body1'183 if self.start_position[0]:184 request.x = self.start_position[0]185 self.start_position[0] = None # So this only happens for the first turtle186 self.get_logger().info(187 f'Given starting point X: {request.x}'188 )189 else:190 request.x = random.uniform(1, 19)191 self.get_logger().info(192 f'Random starting point X: {request.x}'193 )194 195 if self.start_position[1]:196 request.y = self.start_position[1]197 self.start_position[1] = None # So this only happens for the first turtle198 self.get_logger().info(199 f'Given starting point Y: {request.y}'200 )201 else:202 request.y = random.uniform(1, 19)203 self.get_logger().info(204 f'Random starting point Y: {request.y}'205 )206 207 if self.start_position[2]:208 request.theta = self.start_position[2]209 self.start_position[2] = None # So this only happens for the first turtle210 self.get_logger().info(211 f'Given starting Angle: {request.theta*180/math.pi}'212 )213 else:214 request.theta = random.uniform(-2*3.14, 2*3.14)215 self.get_logger().info(216 f'Random starting Angle: {request.theta*180/math.pi}'217 )218 219 # Call request and spawns turtle in result220 result = self.spawner.call_async(request)221 222 print(dir(result)) # debug223 224 self.turtle_spawning_service_ready = True225 return result226 else:227 # Check if the service is ready228 self.get_logger().info('Body spawner is not ready')229 return None230 231 def change_background_color(self, r=None, g=None, b=None):232 self.req = SetParameters.Request()233 param = Parameter()234 param.name = "background_r"235 param.value.type = ParameterType.PARAMETER_INTEGER236 if r:237 param.value.integer_value = r238 else:239 param.value.integer_value = random.randint(0,255)240 self.req.parameters.append(param)241 param = Parameter()242 param.name = "background_g"243 param.value.type = ParameterType.PARAMETER_INTEGER244 if g:245 param.value.integer_value = g246 else:247 param.value.integer_value = random.randint(0,255)248 self.req.parameters.append(param)249 250 param = Parameter()251 param.name = "background_b"252 param.value.type = ParameterType.PARAMETER_INTEGER253 if b:254 param.value.integer_value = b255 else:256 param.value.integer_value = random.randint(0,255)257 self.req.parameters.append(param)258 self.future = self.color_client.call_async(self.req)259 self.get_logger().info('client request sent')260 261 262def main():263 rclpy.init()264 node = FrameListener()265 try:266 rclpy.spin(node)267 except KeyboardInterrupt:268 pass...
task_11_1_once.py
Source:task_11_1_once.py
...12 wrapper.has_run = False13 print(f'id of function {id(wrapper())} name = {wrapper.__name__}')14 return wrapper15@once16def get_logger():17 return [1, 2, 3] * 218'''19### this== ### get_logger = once(get_logger)20print(get_logger.result, get_logger.has_run)21print('*' * 80)22'''23assert id(get_logger()) == id(get_logger()), "Not equal"24print('SUCCESS')25print(f'get_logger: {id(get_logger())} {id(get_logger())}')26print(f'get_logger: {id(get_logger())} {id(get_logger())}')27get_logger.has_run = False28print(f'get_logger: {id(get_logger())} {id(get_logger())}')29assert id(get_logger()) == id(get_logger()), "Not equal"30print('SUCCESS')31result = get_logger()32result.append(42)33print(result)...
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- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
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