# [END send_all]

def send_each():

registration_token = 'YOUR_REGISTRATION_TOKEN'

# [START send_each]

# Create a list containing up to 500 messages.

messages = [

messaging.Message(

notification=messaging.Notification('Price drop', '5% off all electronics'),

token=registration_token,

),

# ...

messaging.Message(

notification=messaging.Notification('Price drop', '2% off all books'),

topic='readers-club',

),

]

response = messaging.send_each(messages)

# See the BatchResponse reference documentation

# for the contents of response.

print('{0} messages were sent successfully'.format(response.success_count))

# [END send_each]

def send_multicast():

# [START send_multicast]

# Create a list containing up to 500 registration tokens.

failed_tokens.append(registration_tokens[idx])

print('List of tokens that caused failures: {0}'.format(failed_tokens))

# [END send_multicast_error]

def send_each_for_multicast_and_handle_errors():

# [START send_each_for_multicast_error]

# These registration tokens come from the client FCM SDKs.

registration_tokens = [

'YOUR_REGISTRATION_TOKEN_1',

# ...

'YOUR_REGISTRATION_TOKEN_N',

]

message = messaging.MulticastMessage(

data={'score': '850', 'time': '2:45'},

tokens=registration_tokens,

)

response = messaging.send_each_for_multicast(message)

if response.failure_count > 0:

responses = response.responses

failed_tokens = []

for idx, resp in enumerate(responses):

if not resp.success:

# The order of responses corresponds to the order of the registration tokens.

failed_tokens.append(registration_tokens[idx])

print('List of tokens that caused failures: {0}'.format(failed_tokens))

# [END send_each_for_multicast_error]