Python Intro

Python 2 main focal point:

• Code readability
• Simplicity

Compile programming language VS Interpreter programming language:

• Compile your code into an executable file. then execute the binary - Compiled code - file.
• Run the script instantaneously without compiling into binary. Because when you run python command you're not running python code standalone. I mean the python program compile your code into binary just in time.

Our IDE - Integrated Development Environment

• VSCode (My preference)
• PyCharm community edition

Basic types in Python

1. Number (Integer, Floating point)
2. String (Anything wrapped between quotations - two/six single/double quote or )
3. Boolean (True, and False)
4. List (Arrays can contain different datatypes. e.x. ['A', 12, True])
5. Dictionary (JSONs with a little different syntax. e.x. {}['name'] = 'Kasir')

Comments in Python

• Single line (#)
• Multi line ('''''')

'''
? ? This is a multiline comment due to it has no effect in Python
? ? Because Python ignore multiline strings that are not assigned to a variable
'''

# And I am a single line comment        

functions

We can type our functions - It comes later on

def printList(numbers)
? ? print(numbers)
? ? for number in numbers:
? ? ? ? print(number)
? ? ? ? # print(type(numbers[index]))


def manyArguments(*args):
? ? print(args)
? ? for arg in args:
? ? ? ? print(arg)
? ? ? ? # print(type(numbers[index]))


list1 = [1,2,3,4,5,6]
str1 = 'string'
number1 = 123456
bool1 = True


manyArguments(list1, str1, number1, bool1)
printList(list1):        

classes

class Enemy:
? ? # FIXME: wrong usage
? ? # __init__(self):
? ? #? ? ?anything = 'something'


? ? # FIXME: wrong usage
? ? # def __init__(self):
? ? #? ? ?self.attack_low = self.attack_low
? ? #? ? ?self.attack_high = self.attack_high
? ? def __init__(self, attack_low, attack_high):
? ? ? ? self.attack_low = attack_low
? ? ? ? self.attack_high = attack_high


? ? # README: static property
? ? hp = 200


? ? def get_hp(self):
? ? ? ? return self.hp


? ? def get_attack_info(self):
? ? ? ? print(self.attack_high, self.attack_low)


e1 = Enemy(80, 100)


e1.get_attack_info()
print(e1.get_hp())        

Modules

• breaking your codebase into modules
• The __init__.py file lets the Python interpreter know that a directory contains code for a Python module.?
• __pycache__ is a directory that contains bytecode cache files that are automatically generated by python, namely compiled python, or . pyc , files. You might be wondering why Python, an "interpreted" language, has any compiled files at all.