var=print
var('hello world')

Output:
hello world

scores={'messi':3,'Ronaldo':1,'ighalo':2,'Giroud':7,'kane':7}

def Highest_goal_scorer(scores):
    goal=max(scores.values()) #highest goal
    scorer_filter=filter(lambda player:scores[player] == goal,scores) #filter highest 
    scorer=[player for player in scorer_filter ]
    return scorer
print(Highest_goal_scorer(scores))

Output:
['kane','Giroud']

#naive approach
players=['messi','Ronaldo','ighalo']
goals={}
for player in players:
    goals[player]=0

print('Goals:',goals)

Output:
Goals : {'messi':0, 'ighalo':0, 'Ronaldo':0}

    
#fast approach

players=['messi','Ronaldo','ighalo']
goals=dict.fromkeys(players,0) #dict.fromkeys(iterable-object,default-value)

print('Goals:'goals)

Output:
Goals : {'messi':0, 'ighalo':0, 'Ronaldo':0}

#To glance through a moudle and check availability method use this function
#dir(name of module) e.g dir(list)
print(dir(list))

import os
print(dir(os))

Class:
    Name - Bird
    Attribute - feather

class(bird): 
#we are going to inherit the bird's attribute so we won't create attribute for parrot #again
    Name - parrot
    method - fly()

class(bird):
    Name - penguin
    method - swin() 
#since penguin can't fly,we dont need to include it into the method

#implementation in python
class bird:
    def __init__(self):
        self.feather= True

class Parrot(bird): #to indicate that we want to inherit bird
    def __init__(self):
        #calling bird.__init__()(super().__init__()) is necessary to implement 
        # bird's attribute in parrot
        super().__init__() 

    def fly(self):
        return 'i am flying'

class Penguin(bird):
    def __init__(self):
        super().__init__() 

    def swim(self):
        return 'I am swimming'
                           
myparrot=Parrot()
mypenguin = Penguin()

print(myparrot.feather) # i can call feather from bird because parrot inherit it
print(mypenguin.feather)
print(myparrot.fly())
print(mypenguin.swim())

Output:
True
True
I am flying
I am swimming

gbolly1151:

Object - Dog
Class;
     name - Animal
     Attribute - Legs,Tail,Body
     Method - bark(),bite(),run()

Just snack to chop, write a description about yourself and write out the class name,attribute and method

class Animal:
    def __init__(self,legs,Tail=True,Body):
        self.legs=legs
        self.Tail = Tail
        Sel.Body = Body

    def bark(self):
        return 'barking'

    def bite(self):
        return 'biting'

    def run(self):
        return 'running'

#let create our object

Dog=Animal (4,Tail=True,'fat') 

#you can leave out tail if true and create like this Dog=Animal(4,'fat')
print(Dog.legs)
print(Dog.Tail)
print(Dog.Body)
print(Dog.bark())
print(Dog.run())
print(Dog.bit())

Output:
4
True
fat
barking
running
biting

locust:


I tried replicating what was done in this book.

#install the virtual environment
pip install virtualenv

#create directory for your project
mkdir projectA

#open the directory
cd project A

#create your virtual environment
#env - is the name you wish to give your environment
python3 -m venv projectAenv

#myprojectAenv directory will be created inside projectA dir

#now i have to activate the environment so that i can be working
#from the environment

projectAenv/bin/activate

#something like below will show which indicate the environment myprojectAenv 
#has been activated
(myprojectAenv)

#minimize and start working on projectA
#To install dependency for projectA,come back to command prompt
#ensure that your environment for projectA is activated by looking at
#in our case (myprojectAenv) is our virtual environment for projectA
#so let install numpy package for projectA

(projectAenv) pip install numpy

#To test your installation
Python
>> import numpy
>>
#if no error it means installation is successful in projectA environment

#to deactivate the environment

(projectAenv) deactivate

#if you now import numpy after you deactivate the environment error will show
#because you are in new environment, i.e main environment

locust:
Please why is line 3 ignored?

I expected the answer series to be:

°Hello World!
° What is your name?
°Locust
°Good to see you Locust
°The length of your name is:

Why was °Locust ignored?

Predstan:


Object - Lion


Class:
Name - Animal
Attributes - short, rounded head, , reduced neck, round ears, hairy tufts at the ending of its tail
Method - run(), jump(), hunt prey()

attribute - head = [short,rounded] <== value
                  neck=reduce <== value
                 ears= round <== value
                 tuff = hairy <==value

Predstan:


Link

#avoid opening file this way
file=open('myfile.txt','r')
file.close()

#you might forgot to close the file which means operation can be done 
#inside the file

#use this
with open('myfile.txt','r') as file:
    #do something

#the indentation cover you up and no need to worry about closing the file