def make_complex():
complex_msg = complex_pb2.ComplexMessage()
# Assignment not allowed to composite field
# one_dummy = complex_pb2.DummyMessage()
# one_dummy.id = 1
# one_dummy.name = "python"
# complex_msg.one_dummy = one_dummy
complex_msg.one_dummy.id = 123
complex_msg.one_dummy.name = "I am dummy message"
print(complex_msg)
first = complex_msg.multiple_dummy.add()
first.id = 23
first.name = "this is first dummy"
print(complex_msg)
complex_msg.multiple_dummy.add(id=24, name="this is second dummy.")
print(complex_msg)
third_dummy = complex_pb2.DummyMessage()
third_dummy.id = 1000
third_dummy.name = "this is third element."
complex_msg.multiple_dummy.extend([third_dummy])
print(complex_msg)
third_dummy.id = 100
third_dummy.name = "I am changed now."
print(third_dummy)
with open('complex.bin', "wb") as f:
print("write as binary.")
bytes_string = complex_msg.SerializeToString()
f.write(bytes_string)
with open("complex.bin", "rb") as f:
print("reading binary file.")
simple_msg_read = complex_pb2.ComplexMessage().FromString(f.read())
print(simple_msg_read)
import complex_pb2 PB_FILE_PATH = 'complex.pb' JSON_FILE_PATH = 'complex.json' message = complex_pb2.ComplexMessage() message.one_dummy.id = 12 message.one_dummy.name = 'dummy1' multiple_dummy = complex_pb2.DummyMessage() multiple_dummy.id = 1 multiple_dummy.name = 'dummy1' message.multiple_dummy.append(multiple_dummy) multiple_dummy.id = 2 multiple_dummy.name = 'dummy2' message.multiple_dummy.append(multiple_dummy) multiple_dummy.id = 3 multiple_dummy.name = 'dummy3' message.multiple_dummy.append(multiple_dummy) multiple_dummy.id = 4 multiple_dummy.name = 'dummy4' message.multiple_dummy.append(multiple_dummy) # 以二进制形式保存 f = open(PB_FILE_PATH, "wb") f.write(message.SerializeToString()) f.close() # 读message message = complex_pb2.ComplexMessage() f = open(PB_FILE_PATH, "rb")
import complex_pb2 as complex_pb2 complex_message = complex_pb2.ComplexMessage() complex_message.one_dummy.id = 123 complex_message.one_dummy.name = "I am a dummy message" first_multiple_dummy = complex_message.multiple_dummy.add() first_multiple_dummy.id = 345 first_multiple_dummy.name = "I'm the first element on an array" complex_message.multiple_dummy.add(id=567, name="Second element") third_dummy_message = complex_pb2.DummyMessage() third_dummy_message.id = 999 third_dummy_message.name = "I'm the last one" complex_message.multiple_dummy.extend([third_dummy_message]) # The result will not change third_dummy_message.id = 111 print(third_dummy_message) print(complex_message)