Computer Science
Class-8
Chapter-9 Taming Python
A. Tick the correct answer:
1. Python is a ______________ language:
a. Dynamically b. Case sensitive c. Compiler based d. Both a and b.
Answer: Dynamically
2. len("hello world") will return ____________ as output.
a. 10 b. 11 c. 9 d. 5
Answer: 10
B. Fill in the blanks:
1. ______________ are non executable statements in a program.
Answer: Comments
2. Python commands are executed without saving in _____________ mode.
Answer: Interactive
3. __________ operator is also known as floor division.
Answer: //
C. Tick the T for true or F for false:
1. Python is platform dependent.
Answer: F
2. Datatype of the output returned for 4/2 and 4//2 will be same.
Answer: F
3. Identifier is the label given on the memory location for reference.
Answer: T
D. Answer the following questions:
1. List any three applications of Python programming language.
Answer: Python is a programming language with many applications, including:
*Data Science: Python is used to collect, analyze, and visualize data.
* Software development: Python is used in all stages of software development, including building, testing, and maintenance.
* Machine learning and artificial intelligence: Python is used in machine learning and artificial intelligence.
* Web development: Python is used to build web apps.
* Game development: Python is used to develop games.
2. Give an example of single line as well as multi line comment.
Answer:
Single line comments: Single line comments begin with the "#" character.
Example:
1. # defining general structure of a car
2. car={
3. "Car_Id": 0, #car reference id, default:0
4. "Car_Description": "", #general description, default:empty
5. "Car_CategoryId": 0, #car category, default: 0
6. "Car_Price": 0, #car's price, default: 0.00
7. }
8. print (car)
Multi line comments:
Example:
1. # You can use
2. # multi-line comments
3. # in this way by
4. # including the comment character
5. # at the beginning of each line
3. Give one advantage for each script mode as well as interactive mode.
Answer: Script mode is useful when you want to run a series of commands on a file or group of files, while the interactive mode is better for testing out individual commands.
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