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A List is an Ordered Sequence • A list can hold many items and keeps those items in the order until we do something to change the order • A list can be sorted (i.e. change its order) • The sort method (unlike in strings) means "sort yourself" >>> friends = [ 'Joseph', 'Glenn', 'Sally' ] >>> friends.sort() >>> print friends ['Glenn ...
Anatomy of a Function def main(): mid = average(10.6, 7.2) print(mid) def average(a, b): sum = a + b return sum / 2 Think/Pair/Share: Find the function definition, function name, parameter(s), and return value in average.
Functions. A function is a group of statements that exist within a program for the purpose of performing a specific task. Since the beginning of the semester we have been using a number of Python’s built-in functions, including: print() range() len() random.randint() ... etc.
Python offers the following list functions: sort (): Sorts the list in ascending order. type (list): It returns the class type of an object. append (): Adds a single element to a list. extend (): Adds multiple elements to a list. index (): Returns the first appearance of the specified value.
Loop Method: - distance(x, y, z) = sqrt(x**2 + y**2 + z**2) - loop through the list and add results to a new list. Map Problem. Solution. from math import sqrt. points = [(2, 1, 3), (5, 7, -3), (2, 4, 0), (9, 6, 8)] def distance(point) : x, y, z = point return sqrt(x**2 + y**2 + z**2)
Calling a Function. The syntax for a function call is: >>> def myfun(x, y): return x * y. >>> myfun(3, 4) 12. Parameters in Python are Call by Assignment. Old values for the variables that are parameter names are hidden, and these variables are simply made to refer to the new values.
In this tutorial, we will cover: Basic Python: Basic data types (Containers, Lists, Dictionaries, Sets, Tuples), Functions, Classes. Numpy: Arrays, Array indexing, Datatypes, Array math, Broadcasting. Matplotlib: Plotting, Subplots, Images. IPython: Creating notebooks, Typical workflows.
