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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
MCA SEMESTER-III EXAMINATION WINTER 2018
Subject Code: 4639304 Date: 09-01-2019
Subject Name: Programming in Python
Time: 10.30 am to 1.00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Explain the following with appropriate examples:
1. Relational operators
2. Iterative construct in python.
07

Answer the following:
1. What is comment in python programming?
2. What is use of statement?
3. Explain statement in python.
4. List any two dictionary methods
5. Explain the operator.
6. Can a function in python return multiple values?
7. Explain the function.
07
Q.2

Give a comparison between List, Tuple and Dictionaries in Python.
07

How are files handled in Python? List at least four types of files that python can handle. Explain any five modes in which files can be operated with proper syntax.
07
OR

Briefly explain file handling in Python? Give the purpose and syntax of the following:
read() and write()
07
Q.3

What do you mean by Assertions? Support your answer with code.
07

What is lambda function in python? Support your answer with appropriate code.
07
OR
Q.3

What are Exceptions? Write a python code to explain exception handling.
07

Explain Formal and Actual arguments in Python. Also explain the following type of arguments with proper code.
Positional Arguments
Keyword Arguments
Default Arguments
Variable Length Arguments
07
Q.4

What is the use of MatPlotLib in Python? Explain use of show() and title() functions of MatPlotLib.
07

How is a defined in python? What is a class variable? Discuss constructor and data hiding from python view point.
07
OR
Q.4

Explain figure(), savefig(), xlabel(), ylabel() with suitable example.
07

What do you mean by polymorphism? Explain overloading and overriding from python view point. Write an appropriate code to support your answer.
07
Q.5

Explain the concept of threading in Python. Also explain the concept of single thread for single-task and multiple threads for multi-tasks.
07

Give the details regarding data base connectivity of MySQL with Python. What methods are used to select, delete and update records from a table in a database?
07
2
Take a sample table 'Subject' from the database Institute, with the columns as: SubjectCode, SubjectName and Semester. Write the code to setup the database connectivity. Also write code to perform select all records and delete all the records from the table.
OR
Q.5

What are regular expressions in Python? How to find out that an email id entered by a user is valid or not using the python module.
07

What is a socket? Give the details of various socket methods with appropriate syntax and explanation.
07