Question 1

Question 1Assertion. A function is a subprogram.Reason. A function exists within a program and works within it when called.

Accepted Answer

(a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.ExplanationA function is a subprogram that acts on data and often returns a value. It is a self-contained unit of code that performs a specific task within a larger program. Functions are defined within a program and can be called upon to execute a specific set of instructions when needed.

Question 2

Question 2Assertion. Non-default arguments cannot follow default arguments in a function call.Reason. A function call can have different types of arguments.

Accepted Answer

(b)Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.ExplanationIn a function call, any parameter cannot have a default value unless all parameters appearing on its right have their default values. Hence, non-default arguments cannot follow default arguments in a function call. Python supports three types of formal arguments :Positional argumentsDefault argumentskeyword arguments

Question 3

Question 3Assertion. A parameter having a default in function header becomes optional in function call.Reason. A function call may or may not have values for default arguments.

Accepted Answer

(a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.ExplanationWhen a parameter in a function header has a default value, it means that if no value is provided for that parameter during the function call, the default value will be used. This effectively makes the parameter optional in the function call. When calling a function with default arguments, we have the option to either provide values for those arguments or omit them, in which case the default values will be used.

Question 4

Question 4Assertion. A variable declared inside a function cannot be used outside it.Reason. A variable created inside a function has a function scope.

Accepted Answer

(a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.ExplanationVariables declared inside a function are typically local to that function, meaning they exist only within the scope of the function and they can only be accessed and used within the function in which they are declared.

Question 5

Question 5Assertion. A variable not declared inside a function can still be used inside the function if it is declared at a higher scope level.Reason. Python resolves a name using LEGB rule where it checks in Local (L), Enclosing (E), Global (G) and Built-in scopes (B), in the given order.

Accepted Answer

(a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.ExplanationIn Python, if a variable is not declared inside a function but is declared at a higher scope level (e.g., in the global scope or an enclosing scope), the function can still access and use that variable. Since Python follows the LEGB rule, variables declared at higher scope levels can be accessed within functions.

Question 6

Question 6Assertion. A parameter having a default value in the function header is known as a default parameter.Reason. The default values for parameters are considered only if no value is provided for that parameter in the function call statement.

Accepted Answer

(b)Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.ExplanationA default parameter is a parameter in a function definition that has a predefined value. When we call a function with default parameters, if we don't provide a value for a parameter, the default value specified in the function header will be used instead.

Question 7

Question 7Assertion. A function declaring a variable having the same name as a global variable, cannot use that global variable.Reason. A local variable having the same name as a global variable hides the global variable in its function.

Accepted Answer

(a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.ExplanationInside a function, you assign a value to a name which is already there in global scope, Python won't use the global scope variable because it is an assignment statement and assignment statement creates a variable by default in current environment. That means a local variable having the same name as a global variable hides the global variable in its function.

Question 8

Question 8Assertion. If the arguments in a function call statement match the number and order of arguments as defined in the function definition, such arguments are called positional arguments.Reason. During a function call, the argument list first contains default argument(s) followed positional argument(s).

Accepted Answer

(c)Assertion is true but Reason is false.ExplanationIf the arguments in a function call statement match the number and order of arguments as defined in the function definition, such arguments are called positional arguments. During a function call, the argument list first contains positional argument followed by default arguments because any parameter cannot have a default value unless all parameters appearing on its right have their default values.

Question 9

Question 1If return statement is not used inside the function, the function will return:0None objectan arbitrary integerError! Functions in Python must have a return statement.

Accepted Answer

None objectReason — The default return value for a function that does not return any value explicitly is None.

Question 10

Question 2Which of the following keywords marks the beginning of the function block?funcdefinedeffunction

Accepted Answer

defReason — The function in Python is defined as per following syntax :def function_name(parameters):
    statementsAccording to this format, function definition begins with keyword def.

Question 11

Question 3What is the area of memory called, which stores the parameters and local variables of a function call ?a heapstorage areaa stackan array

Accepted Answer

a stackReason — A stack is the area of memory, which stores the parameters and local variables of a function call.

Question 12

Question 4Find the errors in following function definitions : def main()  
     print ("hello")def func2():  
     print(2 + 3)def compute():   
     print (x * x)square (a)  
     return a * a

Accepted Answer

Colon is missing at the end of function header.There is no error.The variable x is not defined.def keyword at the beginning and colon at the end of function header are missing.The corrected function definitions are: def main():  
     print("hello") def func2():  
     print(2 + 3)   def compute(x):  
     print (x * x)   def square(a):  
     return a * a

Question 13

Question 1A function is a subprogram that acts on data and often returns a value.

Accepted Answer