Chapter #7 – Functions
(a) Observe the following program carefully, and identify the error:
def create (text, freq):
for i in range (1, freq):
print text
create(5) #function call
Issues in the Code
Incorrect Function Call: The function create is defined to take two parameters (text and freq), but it is called with only one argument (5). This will raise a TypeError.
Print Syntax: If you are using Python 3, the print statement should be a function call with parentheses. The correct syntax is print(text) instead of print text.
Loop Range: The loop in the function starts from 1 and goes up to freq - 1. If you want to print the text freq times, you should adjust the range to include freq.
Corrected Code
def create(text, freq):
for i in range(freq): # This will iterate freq times
print(text) # Use parentheses for print in Python 3
# Correct function call with two arguments
create("Hello, World!", 5)
(b) Observe the following program carefully, and identify the error:
from math import sqrt,ceil
def calc():
print cos(0)
calc() #function call
Issues in the Code:
Missing Import for cos: The cos function is not imported from the math module. You need to include it in your import statement.
Print Syntax: If you are using Python 3, the print statement should be a function call with parentheses. The correct syntax is print(cos(0)).Corrected Code
from math import sqrt, ceil, cos # Importing cos
def calc():
print(cos(0)) # Using parentheses for print
calc() # Function call
(c) Observe the following program carefully, and identify the error:
mynum = 9
def add9():
mynum = mynum + 9
print mynum
add9() #function call
Issues in the Code:
Local Variable Reference: In the function add9, you are trying to modify the variable mynum, which is defined outside the function. In Python, this will raise an Error because Python treats mynum as a local variable within the function due to the assignment statement.
Print Syntax: If you are using Python 3, the print statement should use parentheses. The correct syntax is print(mynum).
Corrected Code:
mynum = 9
def add9():
global mynum # Declare mynum as a global variable
mynum = mynum + 9
print(mynum) # Use parentheses for print in Python 3
add9() # Function call
(d) Observe the following program carefully, and identify the error:
def findValue( vall = 1.1, val2, val3):
final = (val2 + val3)/ vall
print(final)
findvalue() #function call
Issues in the Code:
Default Argument Placement: In Python, default arguments must be placed after non-default arguments in the function definition. In this case, vall has a default value, but val2 and val3 do not, which is not allowed.
Function Call: The function is called as findvalue(), but the correct name is findValue() (note the capitalization). This will raise a NameError.
Missing Arguments: The function findValue requires at least two arguments (val2 and val3) when called, but none are provided in the function call.
Corrected Code:
def findValue(val2, val3, vall=1.1): # Default argument must come last
final = (val2 + val3) / vall
print(final)
# Correct function call with two required arguments
findValue(5, 10) # Example call with val2=5 and val3=10
(e) Observe the following program carefully, and identify the error:
def greet():
return("Good morning")
greet() = message #function call
Issues in the Code:
Assignment Syntax: The line greet() = message is incorrect. In Python, you cannot assign a value to a function call directly. Instead, you should assign the result of the function call to a variable.Corrected Code:
def greet():
return "Good morning" # No need for parentheses around the string
# Correct assignment of the function's return value to a variable
message = greet()
NCERT Computer Science Class 11 Chapter 7 Solutions Q 1
