Python Beyond the Basics

Python tricks for Data Science

• Alphanumeric fancy word for char.lower() in "0123456789abcdefghijklmnopqrstuvwxyz". Fun fact, "6".lower() is still "6"
• You can get the size of your heap queue aka priority queue by taking the len() of the heapq variable. Example: heap = [] hq.heappush(heap, 3) len(heap) is now 1.
• import random random.random() returns a number between 0 and 1, want it bigger? multiply by an integer: random.random()*5 or 5*random.random()
• Python science, data, linear algebra library landscape: numpy for vectors matrices high level math functions. SciPy math classes and functions useful for scientists. PyLab combines other libraries to provide MATLAB like interface.