# Chapter2.py

# line comment

'''
Block Comment
'''

'''
Basics of Programming

Syntax 101
Requirements of the language "Python"

Best Practices "Being Pythonic"
Pythonic -> syntax, framework, resources cpu/memory

Common Practices "Corp Principles"
Operation guide on how to name conventions / organize code

Basic Naming Conventions Applications Framework (Pythonic)

ApplicationName -> TitleCase
Filename -> TitleCase Chapter2.py no spaces, underscores recommended
Factory -> Containers of Data Docker/GitHub TitleCase
PROVIDER -> UPPERCASE File I/O INPUT/OUTPUT APIS
Services -> TitleCase  WebServices MicroServices IOTServices
Classes -> TitleCase Level2 Isolate blocks of reuseabe code
Class Objects -> lowercase or camelCase / blocks of output stored data at rest (memory/hard drive/buffers)
property -> varname and data type  first_name as string
property/variable/return -> what stores a value in an object
value Bob -> assign a value to a variable with an assignment operator = 

The value Bob is assigned to first name.
The value Smith is assigned to last name.
first name and last name are properties of Contact class object
Contact<object> is a member of the Contacts Class

Class -> Services, PROVIDERS, Factories

'''

# page 34 thru 49
'''
= assigning a value to a variable  age = 21 / int age = 21
== testing a value for assigned type  age = 21 testing 21 as int from the value
=== testing the assigned type from the var AND the value. Common NOT to use === in python
'''


# Sets the variable and assigns the value in memory Python
# Pythonic -> we would NEVER EVER set a variable without assigning it a value and returning it to the program aka. The of Demeter 'Priciple of Programming'
# https://en.wikipedia.org/wiki/Law_of_Demeter
## 1. Did I define it?
## 2. Did I set a value?
## 3. Did I return it to be used in my program?

first_name = 'Bob' # Bob is assigned to string first_name in memory. Outside wrapper<single quote> is NOT a part of the value.
last_name = "Smith"
age = 21 # 21 is assigned to integer age in memory
vipStatus = True # boolean

# Get the variables values from memory to "something else"
# standard output "System.stdout" -> terminal (default)
# print() -> 5 core functions page 50
print(last_name)
print(age)

# If we want to see the data type of an object in memory we will use the type() page 50
# use the print() to see the output for type()
# Python
print(type(last_name))
# Pythonic -> readability as user
print(
    type(last_name)
) # print()


'''
Python Core functions -> what you get with version python, you just get these, you dont have to import these to your program
Python Standard functions -> you get for each version you install from python.org BUT you have to use the "import" keyword to add them to your code.
Python pip Functions -> these use HAVE to install using pip command and the import keyword
Custom Modules -> custom functions Level 1
'''

# page 50 5 common core functions we use in code
# print() type() int() str() input()

# Convert quantity from string to int
quantity = int(
    input("How many do you want? ")
    ) # quantity user string with int conversion "casting"
price = 25.20 # data source
total = quantity * price
print(total) # return calc

# EOF Chapter2.py