Programming Fundamentals Using Python — DU B. Sc. (Hons) Electronics Previous Year Question Papers

(b) Create a Numpy array representing the average temperature (in °C) for 12 months: months = [`Jan', `Feb', `Mar', `Apr', `May', `Jun', Plot a bar graph .of temperature vs months using Matplotlib. Add markers, title, and x-axis labels as month names. (6+6+6) Name.of the Course : B.Sc. (H) Electronics 1. (a) Evaluate the following expression: (i) Create Pandas DataFrame using the above data and display it. (ii) Add a new column named Total Sales, calculated as: (b) Examine the following code and identify any errors, if present. Provide a brief justification for your answer Total_Sales = Units_Sold x Price_per_Unit total-0 for i in range(1,N+1): for j in range(1,N+1): total+-j print(total) (iii) Find the T.otal sales for each month (b) Create a class Rectangle with attributes: length and width. Member methods: Area() that returns the area of the rectangle. Perimeter() that returns the perimeter of the rectangle. (c) Explain how .Ioc[] and .iloc[] differ when selecting data from a DataFrame. Display() that prints the rectangle's length, width, area, and perimeter in a readable format. clef show(): Create an object of the class and display their details using the Display() method. print("Inside function, x =", x) A line plot of heights (y-axis) vs. time|]oints (x-axis). A title: "Projectile Trajectory Simulation". Labels for the axes: "Time (s)" and 7. (a) A store keeps track of its monthly sales for two products: Pen and Book. The data is as follows : Montfr Product Units sold Price_per_Unit Jan Pen 120 Jan Book 80 Feb Pen 150 Feb Book 60. Mar Pen 130 Mar Book 100 Apr Pen 170 print("Outside function, x =", x) Trace the output of the above program and identify which x is local and which is global in the above code. Explain why the values of x inside and outside the function differ. (e) Define a function mix(a, b=2) that returns a*b + b. Give outputs for: mix(3), mix(b=5), mix(4' b-3). (D Give the output of the following python snippet setl = {|0, 20, 30, 40, 50, 60} print(setl|set2) print(setl&set2) (3x6-18) 2. (a)Write a Python program to demonstrate the use of identity operators and membership operators. (b) Write a Python program to display a pyramid pattern using nested loops. t = time in seconds vo = initial vertical velocity (in in/s) g = acceleration due to gravity (in in/s2) Assume vo = 50m/s and g = 9.8m/s (c) What will be the output of the following Python code : (i) Create a Numpy array named time_points that represents time from 0 to 10 seconds (both inclusive) with a step of 0.1 seconds. (ii)Using this array, calculate the corresponding heights of the projectile. (iii) print (a ^ b) (iii) Determine and print the maximum height reached by the projectile, and the time at which the maximum height occurs. (iv) Generate a plot showing the trajectory of the projectile. The plot must include: ii) Add a new country and capital into the created dictionary. (iii) Remove any one country and its capital from the created dictionary.