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def print_matrix(matrix):
    for line in matrix:
        print(' '.join(map(str, line)))


def empty(n, m):
    matrix = []
    for i in range(m):
        matrix.append(['.'] * n)
    return matrix

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#!/bin/python3

def get_direction(n, m, x, y):
    if y == 0 and x != n - 1:
        return '>', n-x-1
    if y == m - 1 and x != 0:
        return '<', x
    if x == 0:
        return '^', y
    if x == n - 1:

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import logging
from contextlib import contextmanager
from timeit import default_timer

time_logger = logging.getLogger(__package__ + ".timer")

@contextmanager
def timed_code(name=None):
    next_unit = iter(("s", "ms", "ns", "us")).next
    msg = "section %s took" % (name,) if name else "section took"

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Concurrent HTTP Requests with Python3 and asyncio

http://geekgirl.io/concurrent-http-requests-with-python3-and-asyncio/

My friend who is a data scientist had wipped up a script that made lots (over 27K) of queries to the Google Places API. The problem was that it was synchronous and thus took over 2.5 hours to complete.

Given that I'm currently attending Hacker School and get to spend all day working on any coding problems that interests me, I decided to go about trying to optimise it.

I'm new to Python so had to do a bit of groundwork first to determine which course of action was best.

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"""
This module is no more needed. It could be useful for implementing Django-level authentication.
Now it works using DRF-level authentication -- dating.apps.mongo_auth.authentication.MongoTokenAuthentication.
So it's here JFYI.
"""


# from django.contrib import auth
from django.utils.functional import SimpleLazyObject
from .models import User, AnonymousUser

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import requests
from boto.s3.connection import S3Connection

c = S3Connection(AWS_ACCESS_KEY, AWS_SECRET_KET)

data = 'file content'
filename = 'dir/name.txt'
bucket_name = 'your-bucket-name'
headers = {'Content-Type': 'text/plain'}

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def find_best_subarray(array):
    best_sum = 0
    best_start = 0
    best_end = 0

    cur_sum = 0
    cur_start = 0
    cur_end = 0

    for i, x in enumerate(array):

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def add_preview_for(*fields):
    """
    This is a decorator for model classes that adds preview methods.

    So instead of manually adding preview methods:
    
    >>> class Student(models.Model):
    ...     photo = models.ImageField()
    ...     icon = models.ImageField()
    ...

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tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

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