sharmaeklavya2

Adding Python 3 compatibility and mypy annotations to Zulip

by Eklavya Sharma

GSoC project page: https://summerofcode.withgoogle.com/archive/2016/projects/6309614853292032/

Hi everyone! I'm Eklavya, a Google Summer of Code student working on Zulip. This summer, I mostly worked on 2 things for Zulip:

• Making Zulip's code Python 3 compatible.
• Adding mypy type annotations to Zulip's python code.

sharmaeklavya2

#!/usr/bin/env python

"""
Controls:
Press keys A and D to move rocket 1
Press keys H and K to move rocket 2
Press Ctrl+C to exit
"""

from __future__ import print_function

sharmaeklavya2

1

What will be the output?

#include <stdio.h>
int main(){
    int c=5;
    printf("%d",main||c);
    return 0;

}

sharmaeklavya2

#!/bin/bash

DB_NAME="$USER"
DBMS_SHELL="psql"

#if [ "$1" = '--help' ]; then
if [[ ( "$1" == '--help' ) || ( "$1" == '-h' ) ]]; then
	echo "usage: $0 [DB_NAME] [DBMS_SHELL]"
	echo "default DB_NAME is your username"
	echo "default DBMS_SHELL is 'psql'"

sharmaeklavya2

#/usr/bin/env python
'Generate Time Table'

from __future__ import print_function
import sys
import argparse
from collections import defaultdict

START_TIME = 8
# Time when classes start

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<VirtualHost *:9000>
WSGIDaemonProcess owliver.com python-path=/srv/owliver:/srv/owliver/myvenv3/lib/python3.4/site-packages
WSGIProcessGroup owliver.com

Alias /media/ /srv/owliver/media/
Alias /static/ /srv/owliver/staticfiles/

<Directory /srv/owliver/staticfiles>
	Require all granted
</Directory>

sharmaeklavya2

CPSIG 2014 Problems

This is a list of problems suggested by seniors who taught in the 2014 CPSIG. You can read theory from tutorials on Codechef or TopCoder or a book on algorithms.

Stack

Easy:

Transform the expression

Tough:

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LOLCODE

LOLCODE is an esoteric programming language inspired by lolcat memes on the internet. The language was created in 2007 by Adam Lindsay, researcher at Lancaster University's Computing Department.

Here I have explained basics of LOLCODE with complete examples. However, you may have questions even after reading them because I have not included all details. For an exhaustive reference, read the official documentation.

Hello World

HAI 1.2
BTW This is the famous 'Hello World' program