Editing Community Data Science Workshops (Sprint 2015)/Day 2 lection
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# | == Lecture Outline == | ||
Β | |||
# Introduction to APIs | |||
#* definition of API: just an interface for programs | |||
#* definition of web API | |||
#** way to ask for data (almost always a URL) | |||
#** way to get data back (almost always in a format called JSON) | |||
#** every API is different, and documented | |||
#* to use APIs to build a dataset we will need: | |||
#** all our tools from last session: variables, etc | |||
#** the ability to open urls on the web | |||
#** the ability to create custom URLS | |||
#** the ability to save to files | |||
#** the ability to understand (i.e., parse) JSON data that APIs usually give us | |||
# Review material from last session | |||
#* variables | |||
#* lists | |||
#* dictionaries | |||
#* if statements | |||
#* for loops | |||
#* printing | |||
#* modules | |||
# New programming concepts: | |||
#* Using [http://docs.python-requests.org/en/latest/ requests] to access files on the internet | |||
#* interpolate variables into a string using % and %()s | |||
#* open files and write to them | |||
# [http://placebear.com/ placebear.com] | |||
#* API that takes specially crafted URLs and gives appropriately sized picture of bears | |||
#* example of placebear in browser | |||
#** visit the API documentation | |||
#** bears of different sizes | |||
#** bears in greyscale or color | |||
#** bears not your thing? Try [http://placekitten.com/ placekitten] instead! | |||
#* show how to use place | |||
#* write a small program to grab arbitrary square from placekitten by asking for the size on standard in | |||
# JSON file (JavaScript Object Notation) | |||
#* what is json: useful for more structure data | |||
#* import json; json.loads() | |||
#* like Python (except no single quotes) | |||
#* simple lists, dictionaries | |||
#* can reflect more complicated data structures | |||
#* Example file at http://mako.cc/cdsw.json | |||
#* download it and parse it | |||
# Other APIs | |||
#* every API is different, so read the documentation! | |||
#* for popular APIs, there are python modules that help you make requests and parse json! | |||
#* rate limiting | |||
#* authentication | |||
#* text encoding issues | |||
