a = 0;print(a);
b= 1 ; 
print("value of a :  {} and b :  {} : ".format(a,b));
print("value of a  and b respectively are : {} , {} ".format(a,b));
print("value of b  and a respectively are : {1} , {0} ".format(a,b));
print(" name is : {name} , greeting is : {greeting}".format(name = "guru ", greeting = "Hello "));

print(" combination of all formats : name is : {0} , greeting is : {greeting}".format("guru ", greeting = "Hello "));
