Keywords

Python Keywords are Predefined

False, True

• Boolean Data Types

False == (1 > 2) ,True == (2 > 1)

None

• Empty Value Constant

def func():
  x = 2

func() == None 
--------------
True

and, or, not

Logical Operators

1. x and y : both x and y must be True.
2. x or y : either x or y must be True.
3. not x : x must be False.

x, y = True, False

print(x and y)
print(x or y)
print(not x )

Output : 
False
True
False

break

• Premature Loop Ending.

while(True):
    break 
print('hello world')

Output : 
hello world

class, def

• class : Create New Class
• def : Define a New Function or Class Method.

class Car:
    def __init__(self, Name, Company, Model, Type):
        self.Name = Name
        self.Company = Company
        self.Model = Model
        self.Type = Type
        
    def Details(self):
        return f'🚗 Tata Motors\nCompany : {self.Company}\nName    : {self.Name}\nModel   : {self.Model}'

C = Car(Name = 'Safari', 
        Company = 'Tata',
        Model = 'ZX',
        Type = 'SUV')

print(C.Details())

Output :
🚗 Tata Motors
Company : Tata
Name    : Safari
Model   : ZX

if, elif, else

• Conditional Program Execution.

x = int(input('Enter the Value : '))
if x > 3: 
    print('Big')
elif x == 3: 
    print('Medium')
else:
    print('Small')

Output : 
Enter the Value : 1
Small

for, while

• Creating Loops

for i in [0,1,2]:
    print(i)

j = 0
while j < 3:
    print(j)
    j = j + 1

Output :
0
1
2

in

• Check for Presence in Sequence.

5 in [5,10,15]

Output :
True

is

• Check for Similary.

x = y = 3
x is y

Output :
True

lambda

• Create Anonymous Function

x = (lambda x : x + 3)
x(2)

Output :
5

return

• Result of Function

def increase(x):
    return x + 1
    
increase(99)    

Output :
100