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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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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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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.
Defining Functions in Python. Overview: This activity focuses on an important idea in programming: user-defined functions. This concept appears in practically every programming language, and in Python, there are some particular options available (default arguments, for example) that make it easy to define functions in flexible ways.
- 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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There are three types of functions in Python: I. Built-in functions The Python interpreter has a number of functions built into it that are always available. They are listed here in alphabetical order. II. User-Defined Functions (UDFs): The Functions defined by User is known as User Defined Functions. These are defined with the keyword def III ...
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How to define a user define function in Python?
What is a function in Python?
What is a function argument?
A function is a set of statements that performs a specific task; a common structuring elements that allows you to use a piece of code repeatedly in different part of program. Functions are also known as sub-routine, methods, procedure or subprogram. Syntax to create USER DEFINED FUNCTION def function_name([comma.
