(a) len("hello") == 25/5 or 20/10 5 == 25/5 or 20/10 5 == 5 or 2 True or 2 True, (b) 3 < 5 or 50/(5 - (3 + 2)) True or 50/(5 - (3 + 2)) [ first operand is True, second operand is not evaluated so no division by 0 error happens] True, (c) 50/(5 - (3 + 2)) or 3 < 5 50/(5 - 5) or 3 < 5 50/0 or 3 < 5 Division by Zero Error. Operator Associativity: whenever two or more operators have the same precedence, then associativity defines the order of operations. Also, what can be the maximum and minimum number generated by line 2 ? python for class xii. Class 10 IT (402) notes. Role of new media in society,internet issues,case studies. Value can be found using the built-in function print() like this:print(a). A computer file (or simply "file") is a resource [] Yes, if is operator returns true, it implicitly means that the equality operator will also return True. Most of the students find it difficult to solve the problems or the practice exercise of the NCERT text book difficult. All information about the AL1303 at a glance. Data type in Python specifies the type of data we are going to store in any variable, the amount of memory it will take and type of operation we can perform on a variable. Write a program to obtain x, y, z from user and calculate expression : 4x4 + 3y3 + 9z + 6, Write a program that reads a number of seconds and prints it in form : mins and seconds, e.g., 200 seconds are printed as 3 mins and 20 seconds.[Hint. is operator returning true implies that both the variables point to the same object and hence == operator must return True. To generate a random floating number in the range 0 to 100, random() or random.random() function is used. We are trying to add together a string operand and an int operand using addition operator. Other Special Operatorso Identity Operatorso Membership operators. How are they different from one another? It will give the output as 4 which is value contained in variable a. Id is the memory location of the object which can be determined using built-in function id() like this:id(a). We can store any type of data in Python. Computer tricks. Numeric None Mappings list Sequence set tuple dictionary Question 2 Which of the following are datatypes considered as Numbers in Python. After adding import math to the code given above, what other change(s) are required in the code to make it fully work ? Here you will get computer science with python textbook for class 11 examination 2021-2022. length <= 22 and width <= 14 and depth <= 9. If you have any doubt or query, you are free to ask in the comment section. Click here to read. 3.3 Basic Operators in Python:i. Arithmetic Operatorsii. For Ex. for future use. Subscribe our channel to view all. (area = (3 / 4) * side * side). Each character in a string has its own index. 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It represents a one-dimensional array, containing an array of data. Your email address will not be published. Logical Operatorsiv. Maximum number can be 90 and minimum number can be 0. Whenever any operation is carried out, the file is opened and make available to write upon on reading purposes on RAM. The user input for e is True so e is of type string having value "True". (ii) This logical expression evaluates to 0. Q.1 What are data types? Program is giving a weird result of "0.50.50.50.50.50.50.". The head() function displays n number of elements from the top in the series. Date: 10th Dec 2022. As len(str1) is greater than len(str2) so the output is True. There are three numeric types in Python: Example: w = 1 # int y = 2.8 # float z = 1j # complex, x = 1 y = 35656222554887711 z = -3255522, Example: >>>bool(0) False >>>bool(1) True >>>bool( ) False >>>bool(-34) True >>>bool(34) True, Example: x = 1.10 y = 1.0 z = -35.59 a = 35e3 b = 12E4 c = -87.7e100. The or operator tests the second operand only if the first operand is false otherwise it ignores it. Chapterwise Question Bank CBSE Class 11 Computer Science (Python) Unit 1 : Computer Fundamentals 1. (iii) This logical expression evaluates to None. <dataframe object> = <pandas object>.DataFrame (data, index, columns, dtype) In the above syntax, arguments we used are-. As values of a and b are equal so equality operator returns True. Class 12 Informatics Practices Data Handling Using Pandas Notes and Questions TOPIC - SERIES Q.1 Print the even positions of numpy_series Ans. use // and % to get minutes and seconds]. 3- Closing the file. 3.4 Operator Precedence and Associativity: Operator Precedence: It describes the order in which operations are performed when an expression is evaluated. The tuple datatype is like lists but is not mutable. (d) type (6 / 3) int / int floatSo the result is float. Which of the following literals has True truth-value ? Operators with higher precedence perform the operation first. import pandas as pd array = np.arange (10,15) numpy_series = pd.Series (array,index = ['np1,'np2,'np3,'np4,'np5']) Print the even positions of numpy_series print (numpy_series [::2]) Types Of Software: 3: 3. int('a') produces error but following expression having int('a') in it, does not return error. len(str2) is 5 as backslash (\) character is not counted in the length of string. Follow this link to access important practical programs for the practical file on the topic file handling class 12: File Handling programs for practical file class 12. This code produces an error in the line z = x + y as operands of addition operator (+) are string and int, respectively which is not supported by Python. To use mean() function, statistics module is to be imported. Interchanging the operands of or operator as shown below will make Python report this error: What is the output produced by following code? Data can be represented in specific forms in files. b. Download PDF Read and download free pdf of CBSE Class 11 Computer Data Handling Operators And Expressions Worksheet. Is it safe to directly use the == operator to determine whether objects of type float are equal ? What is the value of the expression 10 + 3 ** 3 * 2? What will be the result of the expression 'a' or " (" is an empty string) ? How does the // operator differ from the / operator? Data types are used to identify the type of data a memory location can hold and the associated operations of handling it. What are Boolean numbers ? What is the maximum possible length of an identifier? Python CSV File Handling. By Dinesh Thakur. How would you resolve it ? Both have the same value of 20. What are main error types? There have been a number of deprecations and API changes in this release, which are documented below. What will be the output, if input for both the statements is 5 + 4/2. For two objects x and y, the expression x is y will yield True, if and only if. Operator Visit : python.mykvs.in for regular updates Operators are special symbols in Python . Write a program that inputs an age and print age after 10 years as shown below: What is your age? To use function fabs( ), math module should be imported. Membership operators- in and not in are the membership operators; used to test whether a value or variable is in a sequence. Chapter 2: Open Source Concepts. C BSE Revision Notes Class 11 Computer Science Python in PDF are available for free download in myCBSEguide mobile app. Examples:Leta = 10b = 4print(a & b)print(a | b)print(~a)print(a ^ b)print(a >> 2)print(a << 2). Train no list assigned as data and train name assigned as indexes. Creating a series from ndarray named nda. Assuming that variables named length, width, and depth have already been assigned values, write an expression combining the three that evaluates to True if bag fits within those limits, and False otherwise. print(a3 is b3) Output: False True False Example: >>>str1= Hello >>>str2=input(Enter a String :) Enter a String : Hello >>>str1==str2 # compares values of string True >>>str1 is str2 # checks if two address refer to the same memory address False. The output of the above Python code is 8.0. Then print the mean, median and mode of the generated numbers. Required fields are marked *. To generate a random number in a sequence of values where two values have a difference a step value, randrange() or random.randrange() function is used. Give an example of where // would be needed. admin July 11, 2022 11th Class, Computer Science 2,176 Views. It occurs because a is of type string but b is of type int. Example: x = 3+5j y = 2+4j z=x+y print(z) 5+9j z.real 5.0 >>>z.imag 9.0 Real and imaginary part of a number can be accessed through the attributes real and imag. Please inform if you could provide me the whole book of computer science class 11.. 10 Comments. Evaluate the following for each expression that is successfully evaluated, determine its value and type for unsuccessful expression, state the reason. What will be the result of the expression 'a' and 'None' ? Other Special operators: There are some special type of operators like- a. An Error is a bug in the code that causes irregular output or stops the program from executing whereas an Exception is an irregular unexpected situation occurring during execution on which programmer has no control. That is, if the input given is 25, the program should print 52. This is Path walla website which help you to make your way of life. Follow this link to read the questions and answer: In above code, I have changed the element value with a scalar value. Syntax for creating dataframe. Write expression to convert the values 17, len('ab') to (i) integer (ii) str (iii) boolean values. (f) type (6 % 3) int % int intSo the result is int. What type of error would have caused it? What will be the value of y after following code fragment is executed ? They have posted their python programming lecture notes online which will give you brief introduction to python programming. If you give the following for str1 = "Hello", why does Python report error? (i) It produces an error as LHS value in this case is an expression that evaluates to a literal whereas LHS value should be a variable. 3. (i.e., a == b is True but why is a is b False?). type () function is used to determine a variable's type in Python. Which of the following are the possible outcomes of the above code ? Chapter 1: Networking. What is the result produced by (i) bool (0) (ii) bool (str(0))? (iv) This logical expression evaluates to None. These files are a collection of bytes stored in computers. Data File handling takes place in the following order. Example:Leta1 = 3b1 = 3a2 = PythonProgrammingb2 = PythonProgramminga3 = [1,2,3]b3 = [1,2,3]print(a1 is not b1), print(a2 is b2) # Output is False, since lists are mutable. Python Fundamentals Class 11 Notes CBSE Notes Class 11 Students should go through the Python Fundamentals Classification Class 11 Computer Science notes provided below. The three internal key-attributes of a value-variable in Python are: The type of a is int which can be found with the built-in function type() like this:type(a). After performing the desirable operation, it needs to be closed so that resources that are tied in the file are freed. 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(b) The statement is incorrect. FM C5900 CMP884 . For 'a' and "a", both equality (==) and is operator returns True as their values are same and they point to the same object. Boolean data type is internally treated as integer data type. The possible outcomes of the above code can be: Option (a) 655, 705, 220Option (d) 345, 650, 110. Single line strings are enclosed in single or double quotes and terminate in one line. These files are saved with an extension or file types. Familiarization with the basics of Python programming: a simple "hello world" program, process of writing a program, running it, and print statements; simple data-types: integer, float, string. When this program is run, the following output is generated (note that input entered by the user is shown in bold): Enter the length of the first side: 3Enter the length of the second side: 4Traceback (most recent call last):h = sqrt(a * a + b * b)NameError: name 'sqrt' is not defined. character, integer, real, string etc. Find the error, its reason and correct it, TypeError: can only concatenate str (not "int") to str. ii. An implicit type conversion is performed without programmer's intervention. Whenever users need such data, data can be presented by files. (a) 655, 705, 220(b) 380, 382, 505(c) 100, 500, 999(d) 345, 650, 110. Example: hello is the same as hello . We have arranged all the chapters in a table and each chapter's book PDF link is given alongside. DATA TYPES Data can be of any type like- character, integer, real, string. Whenever you are working with python you need to save the dataframe data from output screen to file and vice-versa. What are data types in Python? How many integer types are supported by Python? What will be the result of the expression 'x' and 'a' ? To check if two objects reference the same memory address, is operator is used. The Python Complete Notes Pdf resources & tools provided here can help students ace their Python Exam. You cannot change the operators and order of variables. When you develop a program in python, the final output of the program is not available for future use. 33, 33.0, 33j, 33 + j. Free Download Computer Science with Python Textbook for Class 11 - Examination 2022-2023 for students of CBSE, ISCE, and SSC having computer science or IP subjects.This book PDF covers all the essential concepts of Python is highly recommended for beginners in the world of IT. What would following code fragments result in? Data Handling fIntroduction Most of the computer programming language support data type, variables,operator and expression like fundamentals.Python also support these. As it becomes a non-empty string so its truth value is truetval. Here are some of the topics covered: Python datatypes, operators and other modules. Write a program to generate 6 digit random secure OTP between 100000 to 999999. class 12 computer science notes. data handling class 11 python notesdata handling class 11 ip notesdata handling class 11 notesdata handling class 11 pdf, You can help us by Clicking on ads. Python's floating point numbers have precision of 15 digits. Save my name, email, and website in this browser for the next time I comment. There are various data types in Python. It makes a simple and easy process for data analysis. Download PDF Read and download free pdf of CBSE Class 11 Computer Science Data Handling Assignment. Number System: 5: 5. Logical Errors occur due to our mistakes in programming logic. As 0.3 is float so implicit conversion converts 3 also to float and result of the expression is of float type. Syntax errors occurs when the rules of the programming language are violated. The value and type of both 20 and int(20) are the same and both point to the same object so both equality (==) and is operator returns True. 1. To increase the value of x five times using an augmented assignment operator, the correct expression will be. Crating series from Dictionary object and stored first three days of the week in series. As first operand of and operator is True so it will return the second operand. Syntax Errors are caught by the compiler. Which types are most dangerous and why? It can be any type of NumPy data. S. No. In the Python statement x = a + 5 - b : a and b are . . 11 Unit 1 Chapter 03 Data Handling According to new CBSE class XI Syllabus 2018-19 praveenjigajinni Follow Advertisement Recommended Data Handling praveenjigajinni 5.4k views 59 slides Chapter 10 data handling praveenjigajinni 965 views 101 slides Python-01| Fundamentals Mohd Sajjad 1.8k views 35 slides Chapter 9 python fundamentals Great and worth appreciable work. Write a program to obtain temperatures of 7 days (Monday, Tuesday Sunday) and then display average temperature of the week. Most commonly, a time series is a sequence taken at successive equally spaced points in time. Float can also be scientific numbers with an e to indicate the power of 10. Examples of Common Database Management Systems: MySQL, INGRES, POSTGRES, ORACLE, DB2, Microsoft Access. Data Representation 4. It is supposed to compute the hypotenuse of a right triangle after the user enters the lengths of the other two sides. In the expression, the first operand of or operator is len('a') + 2. Our teacher has given us check points questions I'm not finding here _. Python Programming Fundamentals for Class 11 and 12 - File Handling There are several ways to present the output of a program; data can be printed on computer monitor in a human-readable form, or written to a file (for example, image.jpg, notes.txt, etc.) Why? Python does not have a character data type, a single character is simply a string with a length of 1. Python allows for either pairs of single or double quotes. Click to download Class 11 Computer Science NCERT Book Chapter Wise pdf a. These files stored in a directory on a hard drive. CSV (Comma-separated values) is a common data exchange format used by the applications to produce and consume data. In the first expression, 555 is of int type whereas in the second expression 555.0 is of float type. Class 11 computer science notes . (a) type (6 + 3) int + int intSo the result is int. It is a general-purpose programming language intended to let programmers write once, run anywhere (), meaning that compiled Java code can run on all platforms that support Java without the need to recompile. Mishra,PGT CS): Click on Chapters to View & Download. The set sequence type cannot store duplicate values. A blog for Comprehensive notes and Important questions. They can store the output in the following files and those files we will use in file handling python notes class 12: The following tasks will be performed on data files. Also, what can be the maximum and minimum number generated by line 2 ? This exercise will also help the students of CBSE Computer Science class 12 students who are appearing in Multiple Choice Question based, Term 1 examination in November/ December 2021. When it is used the file pointer will be at the beginning of the file, 2. c language tutorial Given str1 = "Hello", what will be the values of: (e) IndexError: string index out of range, H05e14l23l32o41\begin{matrix} \underset{-5}{\overset{0}\bold{H}} & \underset{-4}{\overset{1}\bold{e}} & \underset{-3}{\overset{2}\bold{l}} & \underset{-2}{\overset{3}\bold{l}} & \underset{-1}{\overset{4}\bold{o}} \end{matrix}5H04e13l22l31o4. Write a program whose three sample runs are shown below: Sample Run 1:Random number between 0 and 5 (A) : 2Random number between 0 and 5 (B) :5.A to the power B = 32, Sample Run 2:Random number between 0 and 5 (A) : 4Random number between 0 and 5 (B) :3.A to the power B = 64, Sample Run 3:Random number between 0 and 5 (A) : 1Random number between 0 and 5 (B) :1.A to the power B = 1. Maximum number can be 9.999999.. and minimum number can be 0. The correct boolean literals are False and True. python for bca. Relational Data Model, DATA TYPES IN MySQL . As first operand of and operator is false so it will return the first operand itself. 33j represent the imaginary part of a complex number. Follow this link for practical programs with solution: Python Pandas Series Practicals with solutions. There are a total of 8 chapters in this book. Which of the following operators has the lowest precedence ? Examples of Logical Operator:The and operator: The and operator works in two ways: a. Relational expressions as operands b. numbers or strings or lists as operands, 5>8 and 7>3 False >>> (4==4) and (7==7) True. Syntax Errors occur when we violate the rules of writing the statements of the programming language. You guys are supperrrrrr I have already written a detailed post about Datafiles introduction. a *= 2 + c a = 4.6 * (2 + c) a = 4.6 * (2 + 1) a = 4.6 * 3 a = 13.799999999999999, b += a * c b = b + (a * c) b = 7.4 + (13.799999999999999 * 1) b = 7.4 + 13.799999999999999 b = 21.2, Make change in the expression for z of previous question so that the output produced is zero. Write a program to calculate the radius of a sphere whose area (4r2) is given. For example: The above Python code will work correctly without any errors as Lists are mutable in Python. 17In ten years, you will be 27 years old! Also, give the corrected code. Maximum number can be 995 and minimum number can be 100. Why is this error occurring? Basically series has two main components: Series() function is used to create a series in Pandas. Division operator is present in the expression. ^_^Please do not send spam comment : ), You guys are supperrrrrrThis really really really help me on the last time when I lose all the hope.Great work , U guys are doing great awesome keep helping me . The complex numbers have two parts : real and imaginary. Task 11 reindex () and drop () methods - (Data handling using Pandas-I) Introduction to Python Libraries Python libraries are in-built python modules that allow performing system-related operations, IO operations, data analysis and some other standard operations. Class 11 IP Chapter 4 Data Handling - Solutions Sumita Arora - New Syllabus Uncategorized / By Neha Ex 4.1 2. What will be the result of the expression 'false' and False ? What will be the result of the expression 'a' and " (" is an empty string) ? These modes area) r: to read a file b) w: to write c) a: appendcontents. The division of two integers yields a result of floating-point type. What will be output produced by following code? click here for the answer 4. Here I have used different vector operations and operators to perform various tasks on series. CLASS XII (IP) (As per Old Syllabus-By Sh.Rajesh Kr. The built-in Python methods can manage two file types, text and binary files, but they encode data differently. Augmented assignment operators combine the impact of an arithmetic operator with an assignment operator. Value of d becomes 2 and as values of c and d are equal so print(c == d) prints True. Watch this video for practical understanding: reindex() :Create a similar object but with a different order of same indexes. Given x = 3. (i) This produces an error as false is an invalid literal in Python. Follow this link to read questions about the Python pandas series for class 12. Chapter Name Download; 1: 1. 1K views 1 year ago This video explains "Chapter 3 - Data Handling" of Class 11 "Getting started with Python" of book "Computer Science with Python". A text file consists of a series of lines. Feel free to ask any doubt in the comment section and share this article with your friends and classmates. Python libraries are in-built python modules that allow performing system-related operations, IO operations, data analysis and some other standard operations. The operator used to check if both the operands reference the same object memory, is the . operator. values can be changed but size immutable i.e. Chapter 3: JAVA GUI - Review (XI) Chapter 4: Basics of Object Oriented Programming. cant be changed. Students and teachers of Class 11 Computer Science can get free printable Worksheets for Class 11 Computer Science in PDF format prepared as per the latest syllabus and examination pattern in your schools. The corrected working code is below: Which of the following expressions will result in an error message being displayed when a program containing it is run? iii. The id of an object gives the memory location of the object. Write a program to generate 3 random integers between 100 and 999 which is divisible by 5. Data - Values to be passed in dataframe. An implicit type conversion is automatically performed by the compiler when differing data types are intermixed in an expression. Integer Boolean complex Thanks, motivate us by visiting and sharing with maximum needy pupils, Thanks for the appreciation, keep visiting and share with maximum, [] August 28, 2020May 11, 2020 by tutorialaicsip Importing/Exporting Data Between CSV files and Dataframes is an important part of python syllabus. Advantages of Data Base System: Reduce data redundancy (duplication of data) Control data inconsistency to a large extent. Program compiles and executes but doesn't give the desired output. (e) This will cause an error of unsupported operand types as using division operator on string types is not allowed in Python. Multi-line strings store multiple lines of text and are enclosed in triple quotes. Relational Operators: Relational operators compare the values. and meaningful data is known as information. Which of the following are the possible outcomes of the above code? You can help us by Clicking on ads. Write a program that asks a user for a number of years, and then prints out the number of days, hours, minutes, and seconds in that number of years. A blog for Comprehensive notes and Important questions. Write a program to calculate amount payable after compound interest. b. Computer overview and its Basics 2. When answering questions on data handling where two or more data sets are given, it is advisable to underline keywords (e.g. Data handling means collecting the set of data and presenting in a different form. File handling is the process of saving data in a Python programme in the form of outputs or inputs, The python file can be store in the form of binary file or a text file. Python provides the following functions for reading files: When a variable is assigned with fileobject.readlines() it stores no. Your email address will not be published. Refer to Chapter 1 Data Handling Notes below which have been designed as per the latest syllabus issued by CBSE and will be very useful for upcoming examinations to help clear your concepts and get better marks in examinations. data handling.pdf - Computer Science - Notes - Teachmint data handling.pdf Handling Like Share Views Add to classroom D Deepanshu Goyal hi Class Details 11th CS Computer Science More from Deepanshu Goyal (16) Study Material chapter_11_cs_sumita class-12th Computerscience 0 Likes 61 Views D Deepanshu Goyal Feb 01, 2022 dictionary.pdf class-11th Write a program to take two inputs for day, month and then calculate which day of the year, the given date is. (d) 2 * (2 * (len("01"))) 2 * (2 * 2) 2 * 4 8. Class Notes NCERT Solutions for CBSE Students. Computer science is one of the subject in class 11 and 12. 1. (ii) len('375')**2 3 ** 2 [ len('375') = 3] 9 [ 3 * 3 = 9]. These notes have been designed based on the latest NCERT Book for Class 11 Computer Science. The Class 11 Computer Science Chapter wise notes have been prepared based on the latest syllabus issued for the current academic year by CBSE. Thank you for reading the article. Refer to Chapter 1 Data Handling Notes below which have been designed as per the latest syllabus issued by CBSE and will be very useful for upcoming examinations to help clear your concepts and get better marks in examinations. Time series: random data plus trend, with best-fit line and different applied filters. (a) Compile-time errors are usually easier to detect and to correct than run-time errors. As values of 22.0/7.0 and 22/7 are equal, subtracting them will give the result as 0.0. The collection of observations which are gathered initially is called the raw data. What are Python's built-in core data types? [], Your email address will not be published. Boolean Algebra: 4: 4. Logical errors can make a program run till completion but give incorrect result. What is the value of the expression 100 // 25 ? Anything enclosed in " " is considered as string in Python. Python operator always yields the result of . datatype. 2- Performing operations (read, write) or processing data. Standard 11 students should practise questions and answers given here for Computer Science in Grade 11 which will help them to strengthen their understanding of all important topics. What will be the result of the expression 5 and 10? (c) type (6 * 3) int * int intSo the result is int. Pandas library is used for data analysis. Two forms of floating-point numbers are: fractional form and exponent notation. Write a program to take two numbers and print if the first number is fully divisible by second number or not. To correct it, we need to cast a to int like this: If the user runs the program and enters 11 for a and 9 for b then what will the above code display? Two objects (say a and b) when compared using == ,return True. As first operand of and operator is false so it will return the first operand itself. Explain with example. The course covers the topics essential for developing well documented modular programs using different instructions and built-in data structures available in Python. Primitive Data Types: a. Courtesy: Praveen MJ, PGT CS , Sainik school Amaravathinagar Coimbatore dist Tamil Nadu. This Sumita Arora Python Class 11 Book PDF covers the . Introduction to Data handling using Pandas-I In Python, strings are immutable means that individual letter assignment for strings is not allowed. Syntax errors are found at compile type whereas Logical errors are found when the program starts executing. 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