XPYM301207 InstructorPhilipM-1

10 E - 1 E
1 E - 1:45 E Lunch
1:45 E - 4:45 E

Visual Studio Code

OOP Application
Factory > Container / Store Token / Storage
PROVIDER > API / INPUTS > providing to a class
Services > Injectables / Web Services / HTTPS
Class > template to create objects
 1. class definition > class keyword  name
 2. attributes / Property > "meta" "variables that hold data"
    "instance variables" "fields" "cols" 
 3. method > function that returns to "seomthing else" 
 4. Constructor > __init__ method > "construct data"
 5. Object Instance > obj_name = Class()
 Object
  property > var name and type   fname as string
   value > Philip
    return  

self.fname > from yourself

first_name

this.fname = first_name

this.fname > something else

print("Name: " , fname)  object
print("Name: " + fname)  property
print(f"Name: {fname})  view

assign value to a property fname = "Philip"

break 11:35 E - 11:50 E
page 56 string method f""

Page 60
Inheritance OOP principle
superclasses super() and subclasses in python
parent classs and child classes
overrides / overloads
injectables


Product Master
Discount Schedule

class Product
class Discount Product() + disc%
class Inventory Product() + invAsset, invQty
class PurchaseOrder Product() + vendorid, qty, bo

class Order
class OrderDetails Order() + qty, custom1

.10

10 / 100

25 value
assigned value > arg discount
passed arg to > parameter discount
parameter discount > property self.discount
(self.discount / 100)   (25 / 100)  "Discounted: {self.name}"

Chapter 6
Python Core > print() input() super()    install python
Python Standard > installed with python BUT import keyword and from and as keyword optional
Python Custom > Your libraries import keyword rules
PIP > install with the pip command  pypi.org Level 3 pandas, numpy, pypdf, etc.

Lunch 1 E - 1:45 E
Discussion Standard. High and Low Level Mods.
Page 69
onlclabs.com  click on python click on 12072023 files
chapter6.py
philipm@onlc.com 800.288.8221


Modules High Level and Low Level > architecture and design

functional vs structural

High Level Modules
 1. UI/UX
 2. workflow rules / operational
 3. developers "get there faster" but control/cust/res mgmt
 4. business logic 

Low Level Modules
 1. component tech foundation
 2. more skilled developer
 3. resource allocation
 4. granular control 
 5. device drives, db connections

Standard "installed python" Library
High Level
1. requests  http requests
2. seaborn > matplotlib
3. flask
Low Level
1. os
2. socket
3. multiprocessing
4. any sql conn mysqli sqllite3 jdbc odbc sql.


datetime.year()  whole function  return

def age():
 var fullname = fn + ln
 var age = 21
 return  Philip Matusiak is 21

Contact.age   calling the value  Philip Matusiak is 21


2023  now()
year()
.year

break 3:15 E - 3:30 E
page 71  chapter6subprocess.py

MAC
Linux
Windows 

high level
----------
os
subprocess 
sys
thread cpu

-----------------------------
Array Data Frame pandas
List [] Set {} Tuple () Dictionary {key:value} High Level
collection defaultdict chainmap Low Level

defaultdict class low level 





name  > required
*name > optional  skip
Optional name > optional
**name > optional and it does not have to exist

name visible
*_name hidden
__name meta Property

my_dict = {
 null : null
}

python
x = 7
y = 3

x,y = 7,3  pythonic  MORE CODE

Day 2 10 E
defaultdict
pythonic
testing
philipm@onlc.com 

chapter6dict.py

my_dict = {

}

contacts = []
orders = ()
products = {}

Pythonic > principles and concepts

syntax of code


function or action or event
Allow than Deny

forgiveness

permission if (!condition):
             i dont have to do something
           else:
             run action
App
Factory
PROVIDER  file(txt/csv) I/O
Service  
 Modules  as keyword > namespace
Class  try finally
 Object  methods() and functions()  as > alias
  property  var with type    string testing
  value  if
  view   if keywords

break 11:40 E - 11:55 E
regex discussion page 89
regex labs

"philipm@onlc.com"

re Module  Standard import
(555) 555-1212

( (\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}

Philip     does it begin with a TitleCase

r'^[A-Z][a-z*]?'

ID: 0 Name: Philip

Chapter 8 Testing
 UI/UX testing > flow and design front end
 Backend Testing  OOP
   unit tester > unittest class based testing
   function tester > pytest function based testing 


lunch 1 E - 1:45 E  page 97
unittest framework > Python Standard import
pytest framework > pip install import


"c:\newfolder\newfile.txt" > excape
"c:/newfolder/newfile.txt" > linux
@"c:\newfolder\newfile.txt" > verbose

Suite
 Class
  add()
  multi()
   x = 7
   print("Order ID:" +  int(x) ) 
   result(fname + " " + lname)
  sub()
  div() P