Click the snake to see the code and explanation about my code
🐍 Using OS
import os
print(os.getpid())🐍 Lambda function
numbers = [4,2,6,8,1,5]
words = ['dog','cat','fish','llama','hedgehog']
print(numbers)
numbers.sort()
print(numbers)
numbers.sort(reverse=True)
print(numbers)
print(words)
words.sort()
print(words)
words.sort(reverse=True)
print(words)
# lambda is anomous function
# it can take any number
# but lambda function can do is to return value
# return arg1 + arg 2
# general syntax :
#
# def add_numbers(arg1, arg2):
# # return arg1+arg2
def get_index_zero(some_list):
return some_list[0]
lambda some_list: some_list[0]
stuff=[
['Gamma',5],
['Alpha',7],
['Beta',3]
]
print(stuff)
#key argument need a key function
stuff.sort(key=lambda some_list: some_list[0])
print(stuff)
stuff.sort(key=lambda some_list: some_list[1])
print(stuff)
🐍 Recursion
def add_one(x):
print(x)
if x == 3:
return
add_one(x+1)
add_one(0)
def factorial(x):
if x > 1:
return x * factorial(x-1)
else:
return 1
answer = factorial(4)
print(answer)🐍 Try-except
'''
S="Hello"
num = int(S)
print(num)
S= "Hello"
try:
num = int(S)
print(num)
print("Do something important")
except:
print("Something went wrong")
try:
S= "Hello"
try:
print(foobar)
num = int(S)
print(num)
except ValueError:
print("Unable to convert to int")
except NameError:
print("I failed")
except:
print("Something else went wrong")
except:
print("Got a error in my try")
while True:
try:
num = input("Enter a number: ")
num = int(num)
break
except:
print("Try Again")
import common
num = common.get_integer()
num +=5
print(f"Nem number is {num}")
'''
user_input = int(input('Enter a number: '))
if user_input ==2:
raise ValueError("you cannot use value 2")
print("got here happyly!")🐍 Employee access database
class Employee:
def __init__(self,first_name, last_name,department,salary):
self.first_name = first_name
self.last_name = last_name
self.department = department
self.salary = salary
self.username = (first_name[0] + last_name).lower()
if department == "CEO" or department == "IT":
self.has_access = True
else:
self.has_access = False
employee1 = Employee("Lisa","Brown","IT",40000)
employee2 = Employee("Tri", "McNichols","Admin",50000)
class Workstation:
def __init__(self, ip_address, restricted):
self.ip_address = ip_address
self.restricted = restricted
def login(self,emp):
if emp.has_access == True or self.restricted == False:
print("Access Granted")
else:
print("Access Denied")
wks01 = Workstation("172.16.0.11", False)
wks02 = Workstation("172.16.0.12", True)
print(employee1.has_access)
print(employee2.has_access)
wks02.login(employee1)
wks02.login(employee2)🐍 Classes: example Shapes
class Rectangle:
def __init__(self,width, lenght):
self.width = width
self.lenght = lenght
def get_area(self):
return self.width * self.lenght
def print_area(self):
#print(f"the area is {self.lenght * self.width}")
print(f" the area is {self.get_area()}")
def get_perimeter(self):
return 2*(self.width + self.lenght)
#def print_perimeter(self):
#print(f" the perimeter is {self.get_perimeter()}")
rectangle1 = Rectangle(7,10)
rectangle2 = Rectangle(15, 20)
'''
sum = rectangle1.get_area() + rectangle2.get_area()
sum_perimeter = rectangle1.get_perimeter() + rectangle2.get_perimeter()
print(f" area rectangle1 = {rectangle1.get_area()}")
print(f" area rectangle2 = {rectangle2.get_area()}")
print(f" total area = {sum}")
rectangle1.print_area()
print(f" total perimeter is {sum_perimeter}")
'''
shapes = [rectangle1, rectangle2]
print(shapes[0].get_area())
shapes[1].lenght = 100
print(shapes[1].get_perimeter())🐍 Classes
'''
class Car:
pass
my_first_car = Car()
print(my_first_car)
class Car:
make = "Toyota"
def start(self):
print("Car started")
def accelerate(self, speed):
print(f"Accelerate to {speed} mph")
my_first_car = Car()
my_first_car.start()
second_car = Car()
print(second_car.make)
second_car.make = "Ford"
second_car.accelerate(50)
my_first_car.acceleratte(35)
print(my_first_car.make)
print(second_car.make)
class Car :
make= "Toyota"
model = "corola"
color = "black"
def get_info(self):
return f"{self.color} {self.make} {self.model}"
car1 = Car()
car2 = Car()
car2.make="Honda"
car2.model = "Civic"
car2.color = "Gray"
print(f"I have {car1.get_info()}")
print(f"I also have {car2.get_info()}")
'''
class Car:
def __init__(self, make, model, color, year, doors=4):
self.make = make
self.model = model
self.color = color
self.year = year
self.wheel = 4
self.doors = doors
def get_info(self):
return f" My car is {self.color} {self.make} {self.model} made in {self.year} and has {self.doors} doors"
car1 = Car("Toyota", "Corolla", "Black", " 2000")
#print(car1.x)
print(car1.get_info())
car2 = Car("Honda", "Civic", "Gray","2010")
print(car2.get_info())
car3 = Car("Kia","Atoz", "Red"," 2020",doors = 2)
print(car3.get_info())🐍 IPV4 address verifier
def is_valid(ip_address):
octets=ip_address.split('.')
if len(octets) !=4:
return "invalid"
if int(octets[3])==0:
return "invalid"
if int(octets[0]) == 0:
return "invalid"
for i in range(len(octets)):
if int(octets[i])> 255 or int(octets[i])<0:
return "invalid"
return "valid"
IP = input("enter an IP address: ")
print(is_valid(IP))
S = "Hello World"
h = S.split(' ')[1][0].lower()
print(h)🐍 String manipulation
'''
S = "Hello World"
print(S[0:5])
S2 = S[6:9]
print(S2)
print(S)
print(S[:7])
print(S[3:])
print(S[:])
print(S.lower())
print(S.upper())
print(S)
print(S.replace("o","i"))
print(S.replace(" ", "-"))
print(S.replace("Hello","Goddbye"))
print(S.replace("h","j"))
print(S[4:-1:-1])
print(S[10::-1])
print(S[::-1])
print(S.strip())
S2 = " Foo Bar "
print(f"{S2}!")
S3 = S2.strip()
print(f"{S3}!")
words = S.split(" ")
print(words)
a = S.split("e")
print(a)
b = S.split('o')
print(b)
print(b[2])
c = S.split('Wo')
print(c)
d = S.split('l')
print(d)
e = S.split('Q')
print(e)
'''
S = "Hello World"
a = S[:6]
b = a.strip()
c = b.replace('H','J')
d = c.upper()
print(d)
e= S[:6].strip().replace('H','J').upper()
print(e)
f = S.split(' ')[1].replace('W','H').replace('o','i')[:2].lower()
print(f)🐍 Module
'''
import common
print(common.secret_number)
common.say_hello()
print(common.add(6,4))
'''
import random
num = random.randrange(0,11)
print(num)
import string
print(string.ascii_lowercase)🐍 Grade converter
def double(x):
return 2*x
print(double(8))
print()
def biggest_of_two(x,y):
if x > y:
return x
elif y > x:
return y
print(f"The biggest is {biggest_of_two(7,3)}")
print()
def repeater(word,count):
for i in range(count):
print(word)
repeater("hello ", 5)
print()
def grade_converter(grade):
if grade > 90:
return "A"
elif grade > 80:
return "B"
elif grade > 70:
return "C"
elif grade > 60:
return "D"
else:
return "E"
print(grade_converter(100))
print()
def in_range(x,y,z):
if x < y and x > z or x>y and x < z:
return True
else:
return False
print(in_range(25,5, 12))
print()
numbers = [10, 21, 2, 3]
def print_total(numbers):
total = 0
for i in range(len(numbers)):
total +=numbers[i]
print(total)
print_total(numbers)
🐍 Functions
def f(x):
return 3*x + 2
#f(3)
print(f(3))
print(f(6))
a = f(1)
def g(x,y):
return 2*x + y
print(g(1,2))
def gimme_five():
return 5
print(gimme_five())
print(gimme_five)
def even_odd(x):
if x%2 == 0:
return " Even"
else:
return "odd"
print(even_odd(2))
num = int(input("number: "))
e = even_odd(num)
print(f"{num} is {e}")
def is_positive(x):
if x > 0:
return True
else:
return False
pos = is_positive(7)
if pos == True:
print("Positive Number")
else:
print("Negative Number")
# print(pos)
# Can you have it print out instead:
# Positive Number
# Negative Number
def say_hello():
print("Hello")
print("Bonjour")
print("Hola")
print("Aloha")
say_hello()
print()
say_hello()
print()
print(say_hello())
def test_one():
#print("Hello")
return "world"
#test_one() # Hello
#print(test_one())
a = test_one()
b = test_one()
print(a)
print(b)
#
def test_two(x):
if x > 0:
print("Foo")
else:
return "Bar"
#test_two(7) # Foo
#test_two(-2) #
#print(test_two(5)) #
print(test_two(-1)) # Bar
def test_three(a):
if a > 0 :
return "Foo"
elif a < 0 :
return "Bar"
else:
return "Test"
print(test_three(-2))
def scope_one():
local = 10
print(local)
scope_one()
def scope_two():
print(x)
x = 15
scope_two()
def scope_three():
x = 15
print(x)
x = 10
print(x)
scope_three()
print(x)
def scope_four():
#print(x) #this will give error
x = 15
print(x)
x = 10
#scope_four()
def scope_six(x):
x +=5
return x
x=6
scope_six(x)
print(x)
def function_one(alpha, bravo):
print("Hello")
if alpha < 0 :
return "Foo"
elif bravo > 10:
return "Bar"
else:
return "Something"
a = function_one(3,7)
print(function_one(-2,15))
function_one(2,20)
print(a)
# Hello
#Foo
#Bar
# Hello
#Something
def function_two():
return "Hello"
print("World")
print(function_two())
def function_three():
print("Foo")
return "Test"
print("Bar")
return "Something"
function_three()
def function_four():
for i in range(10):
print(i)
if i == 2:
return "Foobar"
print(function_four())
def add(x,y):
print(x + y)
add(3,8)
def add(*numbers):
sum = 0
for i in range(len(numbers)):
sum += numbers[i]
print(sum)
add(3,7,4,6,5)
add(1,2,3)
add(6,5,4,3,2,1)
print("hello")
print("world")
print("hello", end= "**")
print("world")
print("foo",end = "*")
print("bar", end = "*")
def add(x,y,*numbers):
print(x)
print(y)
print(numbers)
add(1,2,3,4,5,6)
add(9,8,7)
add(4,5)
print("hello", "world", "Foobar")
print("hello", "world", "Foobar", sep = "_")
print("hello", "world", "Foobar", sep = "*", end = "!!")
def do_something(**stuff):
print(stuff)
do_something(a="hello", b=3.5, foo = "Test", bar= True)