Use for variable in sequence to process the elements of a sequence one at a time. Strings are immutable (i.e., the characters in them cannot be changed). Lists are mutable (i.e., their values can be changed in place).

Lists are indexed and sliced with square brackets (e.g., list and list), in the same way as strings and arrays. Lists can contain any Python object, including lists (i.e., list of lists). Use the pyplot module from the matplotlib library for creating simple visualizations. Use an(array, axis=0) or an(array, axis=1) to calculate statistics across the specified axis. Use an(array), numpy.max(array), and numpy.min(array) to calculate simple statistics. Use # some kind of explanation to add comments to programs.

Use low:high to specify a slice that includes the indices from low to high-1. Use array to select a single element from a 2D array. The expression array.shape gives the shape of an array. Use the numpy library to work with arrays in Python. Import a library into a program using import libraryname. Use print(something) to display the value of something.īuilt-in functions are always available to use. Variables are created on demand whenever a value is assigned to them. Use variable = value to assign a value to a variable in order to record it in memory. Programming with Python: Glossary Key Points Python Fundamentalsīasic data types in Python include integers, strings, and floating-point numbers.

Additive sequence of an array