De?nition

 

A method de?nition has the abstract form:

def (, ..., ):

...

 

There are essentially three parts:

• is a name for the procedure, with the similar limitation as a variable name;

• , ..., is a list of formal arguments, which will given for the data elements on which this procedure will operate; and

• , ..., , known as the body of the method, is a list of Python statements (right now, we know about assignment expression, print instruction.)

When we compute a procedure de?nition in an environment, E, Python does have two things:

 

1. Makes a procedure object19  that contains the formal parameters, the body of the function, and a pointer to E; and then

 

2. Binds the name  to have this procedure as its value.

 

Here is a program of an environment after we have calculated

 

 

 

 

Note how  the construct to which  square points  is a procedure body, with  a number of formal  parameters,  a object, and a pointer to its environment.

 

Posted Date: 8/11/2012 2:00:29 AM | Location : United States

Ask an Expert

Related Discussions:- A method defination , Assignment Help, Ask Question on A method defination , Get Answer, Expert's Help, A method defination Discussions

Write discussion on A method defination
Your posts are moderated

Write your message here..

Related Questions

Structured assignment, Structured assignment Once  we have  tuples and... Structured assignment Once  we have  tuples and lists, we may use  a nice trick  in assignment expression, based  on the packing and unpacking of tuples. >>> a, b, c = 1, 2

Graphing data, Write a program that will take price data for stocks and pri... Write a program that will take price data for stocks and print it graphically to the screen. Your program should begin by asking the user for the file name. It should then create a

List comprehensions, List Comprehensions   Python has a very nice b... List Comprehensions   Python has a very nice built-in  facility for doing  many  iterative methods, known as list comprehensions. The basic template is       [

Hw, Suppose the cover price of a book is $24.95, but bookstores get a 40% ... Suppose the cover price of a book is $24.95, but bookstores get a 40% discount. Shipping costs $3 for the first copy and 75 cents for each additional copy. What is the tota

List mutation and shared structure, List mutation and shared structure ... List mutation and shared structure Lists are mutable data  structures, which defines  that  we can actually modifies  the values  stored in their components. We do this by usi

Procedures as in First-class objects, Procedures as first-class objects ... Procedures as first-class objects In Python, unlike  many  other  languages, methods are behave in much  the same way as num­ bers:  they  can be stored as values  of variable

Print vs return, Print vs Return Here are two different method declara... Print vs Return Here are two different method declarations: def f1(x): print x + 1 def f2(x): return x + 1 What happens when  we call them? >>> f1(3) 4 >>

Example of Procedures as First-class objects, Procedures in Firrst-class ob... Procedures in Firrst-class objects In Python, unlike  many  other  languages, methods are behave in much  the same way as num­ bers:  they  can be stored as values  of variabl

Procedures as First-class objects, Procedures as First-class objects I... Procedures as First-class objects In Python, unlike  many  other  languages, methods are behave in much  the same way as num­ bers:  they  can be stored as values  of variable

Python programme comparing for and while loops, 1)    Write a python progra... 1)    Write a python programmecomparing for and while loops like the following. Math Times table For Loop: 2x1=2 2x2=4 ..... 2x12=24 While Loop: 3x1=3 3x