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# Add these two gems
gem 'ice_cube',                     '0.9.3'
gem 'squeel',                       '1.0.16'

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import serial
import csv
import re
import matplotlib.pyplot as plt
import pandas as pd
 
portPath = "/dev/ttyACM0"       # Must match value shown on Arduino IDE
baud = 115200                     # Must match Arduino baud rate
timeout = 5                       # Seconds
filename = "data.csv"

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#!/usr/bin/python
#
#simple app to read string from serial port
#and publish via MQTT
#
#uses the Python MQTT client from the Mosquitto project
#http://mosquitto.org
#
#Andy Piper http://andypiper.co.uk
#2011/09/15

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def identity(nums):
    """Identity:

    Given a list of numbers, write a list comprehension that produces a copy of the list.

        >>> identity([1, 2, 3, 4, 5])
        [1, 2, 3, 4, 5]

        >>> identity([])
        []

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Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

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# 17 list comprehension problems in python

fruits = ['mango', 'kiwi', 'strawberry', 'guava', 'pineapple', 'mandarin orange']

numbers = [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 17, 19, 23, 256, -8, -4, -2, 5, -9]

# Example for loop solution to add 1 to each number in the list
numbers_plus_one = []
for number in numbers:
    numbers_plus_one.append(number + 1)

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#!/usr/bin/env python

import sys
import csv

def MeanAveragePrecision(valid_filename, attempt_filename, at=10):
    at = int(at)
    valid = dict()
    for line in csv.DictReader(open(valid_filename,'r')):
        valid.setdefault(line['source_node'],set()).update(line['destination_nodes'].split(" "))

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#=======================================================================#
# extract_data.py                                                       #
#=======================================================================#
# usage: extract_data.py [-h] [-i INPUT_DIR] [-o OUTPUT_DIR]
#
# This program extracts provision numbers from a set of documents.
#
# optional arguments:
#  -h, --help            show this help message and exit
#  -i INPUT_DIR, --input_dir INPUT_DIR

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Array

• Two Sum
• Best Time to Buy and Sell Stock
• Contains Duplicate
• Product of Array Except Self
• Maximum Subarray
• Maximum Product Subarray
• Find Minimum in Rotated Sorted Array

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