# Learning A Language (Python)

# 1. Terms

# 2. Data Types

# 3. Variables

# 4. Actions

# 5. Best Practices

int

float

bool

str

tuple

set

dict

# FUNDAMENTAL DATA TYPES

# int and float

# print(type(2 + 4))

# print(type(2 - 4))

# print(type(2 * 4))

# print(type(2 / 4))

# print(2 ** 2)

# print(2 // 4)

# print(5 % 4)

# # math functions

# print(round(3.9))

# print(abs(-20))

# # operator precedence

# print(20 + 3 * 4)

# # ()

# # **

# # * /

# # + -

# # print((5 + 4) * 10 / 2) # 45

# # print(((5 + 4) * 10) / 2) # 45

# # print((5 + 4) * (10 / 2)) # 45

# # print(5 + (4 * 10) / 2) # 25

# # print(5 + 4 * 10 // 2) # 0

# print(bin(5))

# print(int('0b101' , 2))

# # VARIABLES

# # snake_case

# # start with a lowercase or underscore

# # letters, numbers, underscores

# # case sensistive

# # don't overwrite

# iq = 190

# user_age = iq/4

# print(user_age)

# a,b,c = 1,2,3

# print(a)

# print(b)

# print(c)

# # CONSTANTS

# PI = 3.14

# # expressions and statements

# iq = 100

# user_age = iq / 5

# # augmented assignement operator

# some_value = 5

# some_value = 5 + 2

# # STRING

# first_name = 'Stefan'

# last_name = 'James'

# full_name = first_name + ' ' + last_name

# print(full_name)

# # Escape Sequence

# weather = "It\'s sunny"

# print(weather)

# # formatted strings

# name = 'Stefan'

# age = '36'

# print('Hi ' + name + '. You are ' + age + ' years old.')

# selfish = '01234567'

# # 01234567

# # [start:stop:stepover]

# print(selfish[0:8:2])

# # BOOLEANS = True or False

# name = 'Stefan'

# is_cool = False

# is_cool = True

# name = 'Stefan James'

# age = 36

# relationship_status = 'married'

# print(relationship_status)

# birth_year = input('what year were you born?')

# age = 2020 - int(birth_year)

# print(f'your age is:{age}')

#Classes -> custom types

#Specialized Data Types

# None

# username = input('what is your username?')

# password= input('what is your password?')

# password_length = len(password)

# hidden_password = '*' * password_length

# print(f'{username}, your password, {hidden_password} is {password_length} letters long')

# Matrix

# matrix = [

# [1,2,3],

# [2,4,6],

# [7,8,9]

# ]

# print(matrix)

# weapons = None

# DICTIONARY (unordered key value pair)

# dictionary = {

# 'weapons' : [1,2,3],

# 'greeting' : 'hello',

# 'is_Magic' : True

# }

# user = {

# 'basket': [1,2,3],

# 'greet' : 'hello',

# 'age' : 21

# }

# print (user.items())

# Tuple (immutable lists)

# my_tuple = (1,2,3,4,5)

# print(my_tuple.index(5))

# SET (unordered collection of unique objects)

# my_set = {1,2,3,4,5,}

# your_set = {4,5,6,7,8,9,10}

# print(my_set.difference(your_set))

# .dis

is_old = 'hello'

is_licensed = True

if is_old and is_licensed:

print('you are old enough to drive, and you have a license!')

else:

print('you are not of age')

print('okoko')

# Truthy and Falsy

# Tenary Operator

# condition_if_true if condition else condition_if_else

is_friend = False

can_message = "message allowed" if is_friend else "not allowed to message"

print(can_message)

# Short Circuting

is_Friend = True

is_User = True

is_Friend and is_User:

print('best friends forever')