formatted stirngs 

message1 = ' sermon'

age = 20

print('my name is '+ message1 +' and my age is '+ str( age)) #if i dont do type converstion here error will occur here due to stirng concatenation

#this is here looks not so clean so we use formatted strings

print(f"my name is {message1} and my age is {age}") #this is in python 3

#now for python 2

print("my name is {} and my age is {}".format(message1,age))