An Initial slide for my PyCon India 2017 proposal

1. Boosting Python Web
Apps with Protocol
Buffers & GRPC
Naren Arya @Citrix R&D

2. Whoami
● Software Engineer
2 working @
Citrix R&D
● Blogger
@IMpythonist &
Medium
● Pythonista,
Gopher and Open
Source Lover
A programmer with 4 eyes
since 4th class

3. Why JSON is good?
JSON is good because
● It is simple
● It is well accepted
● People cannot bear with XML
● REST popularity

4. Why JSON is dying ?
JSON is dying
because it is
not better
than Protocol Buffers!

5. What are protocol buffers?
Just a format which looks exactly like Go structs
Protobuf Go struct
syntax ‘proto3’;
message Person {
string name = 1;
int32 age = 2;
}
type Person struct {
Name string
Age int32
}

6. What are benefits I get with Protobuf?
● Binary encoding => Less Size
● HTTP/2 compliant => Many Goodies like
Header compression
● Strict typing for checking data format
● Platform independent(Hey! JSON does this
too)

7. Steps for using Protobuf with Python - 1
We need to do few things before playing with Protobuf
● Install protoc compiler on any machine
● Run this command
protoc -I=$SRC_DIR --python_out=$DST_DIR
$SRC_DIR/addressbook.proto

8. Steps for using Protobuf with Python - 2
● Use the class file that generated
● Import respected classes in main program
Important Methods
SerializeToString(): serializes the message and returns it as a string. Note that
the bytes are binary, not text; we only use the str type as a convenient
container.
ParseFromString(data): parses a message from the given string.

9. Nah nah, More things are kept for Final slide!
Sneak Peek of upcoming slides:
1.Working with a real world example
2.Introducing GRPC
3.Building GRPC Servers and Clients in Python
4.Using Protobufs with GRPC to scale microservices
5.Everything is demonstrated with code!
Wait and See until then! Bye