ChiPy __Main__ Meeting

When: March 8, 2018, 6 p.m.

Where: Metis

1033 West Van Buren St 3rd Floor Chicago, IL 60607


This event is no longer accepting registrations.

Current Attendance: 162 Pythonistas


  • Introduction to Keras
    By: Chris Gruber
    Experience Level: Intermediate
    Length: 30 Minutes
    Description: Keras is a popular framework for building neural networks in Python. Using Keras, a developer can define and train a neural network in just a few lines of code. Keras also includes a number of pre-built networks to build state-of-the-art models for language translation, image recognition, etc. This talk will consist of an overview of Keras and its features, and a demo in which we build and train a classifier for the MNIST hand-written digit dataset.
  • Formatted strings in Python 3.6
    By: Phil Robare
    Experience Level: Novice
    Length: 15 Minutes
    Description: 3.6 has introduced a fourth way to format output from a Python program. PEP 498 introduced a new kind of string literals: f-strings, or formatted string literals. Formatted string literals are prefixed with 'f' and are similar to the format strings accepted by str.format(). They contain replacement fields surrounded by curly braces. The replacement fields are expressions, which are evaluated at run time, and then formatted using the format() protocol This talk will give a quick overview of syntax, usage, and possibly abuse of this new feature.
  • mitmproxy: Lift the veil on server-side HTTP(s) interaction
    By: Ross Heflin
    Experience Level: Intermediate
    Length: 15 Minutes
    Description: When writing web frontends there's powerful tools for understanding backend calls made by a website (Network tab in Chrome, Firefox, Webkit'sm Dev Tools and HAR analyzers). These are (reasonably) great for figuring out what requests a browser is making to backend servers & what came back. When dealing with server-side code its somewhat harder to see all requests made to other systems in context of what requests came into the server-side api without instrumenting your code with lots of (often incomplete) logging. During the last 5 years, I've worked through many issues in various languages/frameworks and libraries, where the only common thread was (sometimes complex) communication with other systems over HTTP(S) by using mitmproxy. This talk will cover a variety of use cases, demonstrating some useful capabilities of this versatile tool with minimal (if any) changes to existing code regardless of source language, server-side framework, and HTTP client used.