open() as it name implies used to open a data file in a program through file object and close() is used to close() the link of file object and data file. Once data file is closed, no operation can be performed.
How is file open() function different from close() function? Read More »
File object also known as file handler is a tool used to read and write data to a file on a disk. All the functions such as reading data from a file, writing data in a file, closing data file etc are performed through file objects.
What is the significance of file-object? Read More »
“w” and “a” are fie modes which determines the type of operation to be done on data file. Both are used for writing data in a file. The difference between them is- – In “a” mode existing data of file is retained and new data is inserted at the end.– In “w” mode existing data
What is the difference between “w” and “a” modes? Read More »
(a)for I in range (20,30,2):print(i)(b)country = ‘INDIA’for i in country:print (i)(c)i=0; sum = 0while i < 9 :if i % 4 == 0:sum = sum + ii = i + 2print (sum) Ans: (a) Will display output2022242628 (b) Will display outputINDIA (c) Will display output 12
Find the output of the following program segments: Read More »
To implement conditions in a program we always use if statement. We can use single if statement or multiple if statement as per our situation. When we want to implement multiple if statement than we use if…elif…else statement in python. Here ‘eleif’ is short form of ‘else if’ which is used in other languages. We
What is the difference between else and elif construct of if statement? Read More »
from datetime import datedates = date.today()name = input(“Enter your Name”)age = int(input(“Enter your Age”))diff = 100 – ageresult_year = dates.year + diffprint(“You will turn 100 years old in “, result_year)
num1 = int(input(“Enter Num1”)num2 = int(input(“Enter Num2”)num3 = int(input(“Enter Num3”)average = (num1 + num2 + num3 )/3print(“Average = “, average)
Write a program to find the average of 3 numbers. Read More »
P = int(input(“Enter Principal Amount or Money lent”))R= int(input(“Enter Rate of Interest”))T = int(input(“Enter Time Period”))SI = (P*R*T)/100amt = P + SIprint(“Amount Payable is = ” , amt)
a) num1+= num2 + num3Ans: it will not display any output but value of num1 will become 9 becauseb) print(num1)Ans: Will display 9 which is value of num1.c) num1 = num1 ** (num2 + num3)Ans: it will not display any output but value of num1 will be updated to 59049 because num1 = num1 **
Give the output of the following when num1 = 4, num2 = 3, num3 = 2 Read More »
a) Number of months in a year.b) Resident of Delhi or notc) Mobile numberd) Pocket moneye) Volume of a spheref) Perimeter of a squareg) Name of the studenth) Address of the student ANS: a) ‘int’ data type will be used because number of months is always an integer or whole number. b) ‘bool’ (boolean) data
Which data type will be used to represent the following data values and why? Read More »
