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Python for Secret Agents - Volume II

Python for Secret Agents - Volume II - Second Edition

By : Steven F. Lott
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Python for Secret Agents - Volume II

Python for Secret Agents - Volume II

5 (1)
By: Steven F. Lott

Overview of this book

Python is easy to learn and extensible programming language that allows any manner of secret agent to work with a variety of data. Agents from beginners to seasoned veterans will benefit from Python's simplicity and sophistication. The standard library provides numerous packages that move beyond simple beginner missions. The Python ecosystem of related packages and libraries supports deep information processing. This book will guide you through the process of upgrading your Python-based toolset for intelligence gathering, analysis, and communication. You'll explore the ways Python is used to analyze web logs to discover the trails of activities that can be found in web and database servers. We'll also look at how we can use Python to discover details of the social network by looking at the data available from social networking websites. Finally, you'll see how to extract history from PDF files, which opens up new sources of data, and you’ll learn about the ways you can gather data using an Arduino-based sensor device.
Table of Contents (7 chapters)
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6
Index

Collecting bulk data with the Arduino


First, we'll expand our IR sensor reading sketch to wait for the sensor to show a stable reading. We'll use this stable reading algorithm to gather a batch of 16 samples from the sensor. This will give us some data that we can use for calibration.

The expanded version of the gather_data() function includes three separate features. We've left them in a single function, but they can be decomposed if required to make the Arduino more responsive. Here are the global variables shared by gather_data() and share_data():

unsigned long start_time, end_time;
int raw_reading;
#define MODE_LIMIT 6
int reading[MODE_LIMIT];
int count[MODE_LIMIT];

const int TIME_LIMIT = 5000; // Microseconds.

We defined three important features for our data collection: the start time for reading, the end time for reading, and the raw value that was read. We included two other pieces of data definition that are unique to the Arduino language.

The #define statement creates a symbol that...

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Python for Secret Agents - Volume II
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