Bank transfer, Python Programming

Bank transfer

What  if we  have  two  values,  representing bank  accounts, and  need  to transfer an  amount of money  amt between them?  Consider that a bank account is shown as a list of values,  such as ['Alyssa', 8300343.03, 0.05], defining that 'Alyssa' has a bank balance  of $8,300,343.03, and has to give a 5-cent fee for every  bank transaction. We may  give  this function as follows. It transfers the amount from  one balance  to the other,  and  deduct the transaction fee from  each account.

def transfer(a1, a2, amt):

a1[1] = a1[1] - amt - a1[2]

a2[1] = a2[1] + amt - a2[2]

To understand what  it's doing,  you really have to read  the code at a detailed layer.  Furthermore, it's simple to get the variable names  and subscripts wrong.

 

Here's another version that  abstracts away  the common idea of a deposit (which  can be positive or negative) into a function, and uses it twice:

 

def transfer(a1, a2, amt): deposit(a1, -amt) deposit(a2, amt)

def deposit(a, amt):

a[1] = a[1] + amt - a[2]

 

Now,  transfer looks pretty simple, but deposit can  still use some work.  In particular, the need of numeric indices  to get the components out of the bank  account de?nition is a bit cryptic  (and easy to get wrong).10

 

def deposit(a, amt):

(name, balance, fee) = a

a[1] = balance + amt - fee

 

Here,  we've used  a destructuring assignment statement to give names  to the components of the account. Unfortunately, when  we want  to modify  a component of the list showing the account, we have  to index  it explicitly.   Shown  that  we have  to use explicit  indices,  this  mechanism in which  we name  them  might  be better.

 

acctName = 0 acctBalance = 1 acctFee = 2

def deposit(a, amt):

a[acctBalance] = a[acctBalance] + amt - a[acctFee]

 

Strive, in your  programming, to make  your  code as easy, simple, clear and  direct  as possible.  Rarely,  the clear  and  simple approach will be too inef?cient, and  you'll have  to work on  something more  hard. In such type, you should still initiate with  something simple and  clear,  and  in the end, you may use it as documentation

 

Posted Date: 8/9/2012 7:24:51 AM | Location : United States







Related Discussions:- Bank transfer, Assignment Help, Ask Question on Bank transfer, Get Answer, Expert's Help, Bank transfer Discussions

Write discussion on Bank transfer
Your posts are moderated
Related Questions
Worked example 1   Let's examine what  happens when  we compute the following Python code:   def p(x, y): z = x*x - y return z + 1/z   >>> p(1.0, 2.0) -2.0

from urllib2 import urlopen # Open http://placekitten.com/ for reading on line 4! response = kittens.read() body = response[559:1000] # Add your ''print'' statement here!

Task (Anagrams) Write a function that checks whether two words are anagrams. Two words are anagrams if they contain the same letters. Fore example, silent and listen are anagrams.

For this assignment, you need to create a program that allows the user to do basic trigonometry functions. First, ask the user if he or she would like to do sine, cosine, or tangen

I have a C++ code (10-15 line) which i need to re-write in python with the help of ctypes library. Is it possible i can get some help with it? Thanks & regards Tanmoy

Java programs are  what  is known as statically and  strongly defined.  Thus,  the  kinds  of all the variables must  be known at the time that the program is written. That seems

There are three seating categories at a stadium. For a softball game, Class A seats cost $15, Class B seats cost $12, and Class C seats cost $9. Write a program that asks how many

from urllib2 import urlopen var= ('' response">http://placekitten.com'') response = kittens.read(body) body = response[559:1000] print ''Kittens:'', response

Ask question #Minimum 100 worIn this project, create the pseudo code from the following request. The program must have some sort of menu that allows users to make selections to

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