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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.
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- About this Book
- Strings
- print x
- Methods
- true
- Modules
- 'Tue Sep 11 21:42:06 2012'
This book is prepared from the training notes of Anand Chitipothu. Anand conducts Python training classes on a semi-regular basis in Bangalore, India. Checkout out the upcoming trainings if you are interested.
Strings what you use to represent text. Strings are a sequence of characters, enclosed in single quotes or double quotes. >> x = "hello" >> y = 'world' >> print x, y hello world There is difference between single quotes and double quotes, they can used interchangebly. Multi-line strings can be written using three single quotes or three double quote...
y = '''multi-line strings can be written using three single quote characters as well.
Methods are special kind of functions that work on an object. For example, upper is a method available on string objects. >> x = "hello" >> print x.upper()
> istrcmp('LaTeX', 'Latex') True > istrcmp('a', 'b') False
Modules are libraries in Python. Python ships with many standard library modules. A module can be imported using the import statement. Lets look at time module for example: >> import time >> time.asctime()
The asctime function from the time module returns the current time of the system as a string. The sys module provides access to the list of arguments passed to the program, among the other things. The sys.argv variable contains the list of arguments passed to the program. As a convention, the first element of that list is the name of the program. L...
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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.
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Functions in Python. Defining Functions. Function definition begins with “def.” Function name and its arguments. def get_final_answer(filename): “““Documentation String””” line1. line2 Colon. return total_counter. The indentation matters... First line with less .
general way to define a function in Python. A function so declared can be called in any way, with any valid combination of keyword and non-keyword arguments - including no arguments.
Your function definition should make use of: a. pmSetPixel(wn, x, y, r, g, b) to change the r, g, and b values of a pixel in an image. b. looping with the for statement. Finally, try to write a function that will accept as an argument the window number of an existing image and that will create a new image that is a mirror image of the old one.
Lecture 12: Python programming • a (formerly) simple language that scales well to large(ish) programs • designed & implemented in 1990 by Guido van Rossum at CWI in Amsterdam • very widely used – standard language for many intro courses (though not CS here) – standard language for data science
