Python Answers

Construct a dictionary for storing Student information. The dictionary should have
‘studentId’ as key and ‘studentName’ , ‘studentRollNo’, ‘studentAge’, and the last element
will be a list containing marks of students in 5 subjects. Your task is to populate this
dictionary with at least 10 entries and display all the information about the students with
Highest and lowest marks. Also calculate the average marks scored by all the students and
display the information of students scoring above average marks. At last, sort the dictionary
by the ‘studentName’ and display the result.

Give at least three examples that show different features of string slices. Describe the feature illustrated by each example. Invent your own examples. Do not copy them for the textbook or any other source.

. Consider the loop from Section 8.3 of your textbook.

prefixes = 'JKLMNOPQ'
suffix = 'ack'

for letter in prefixes:
print(letter + suffix)

Put this code into a Python script and run it. Notice that it prints the names "Oack" and "Qack".

Modify the program so that it prints "Ouack" and "Quack" but leaves the other names the same.

Include the modified Python code and the output in your submission.

Write a function named test_sqrt that prints a table like the following using a while loop, where "diff" is the absolute value of the difference between my_sqrt(a) and math.sqrt(a).
a = 1 | my_sqrt(a) = 1 | math.sqrt(a) = 1.0 | diff = 0.0
a = 2 | my_sqrt(a) = 1.41421356237 | math.sqrt(a) = 1.41421356237 | diff = 2.22044604925e-16
a = 3 | my_sqrt(a) = 1.73205080757 | math.sqrt(a) = 1.73205080757 | diff = 0.0
a = 4 | my_sqrt(a) = 2.0 | math.sqrt(a) = 2.0 | diff = 0.0
a = 5 | my_sqrt(a) = 2.2360679775 | math.sqrt(a) = 2.2360679775 | diff = 0.0
a = 6 | my_sqrt(a) = 2.44948974278 | math.sqrt(a) = 2.44948974278 | diff = 0.0
a = 7 | my_sqrt(a) = 2.64575131106 | math.sqrt(a) = 2.64575131106 | diff = 0.0
a = 8 | my_sqrt(a) = 2.82842712475 | math.sqrt(a) = 2.82842712475 | diff = 4.4408920985e-16
a = 9 | my_sqrt(a) = 3.0 | math.sqrt(a) = 3.0 | diff = 0.0

Modify your program so that it outputs lines for a values from 1 to 25 instead of just 1 to 9.

in a function named my_sqrt that takes a as a parameter, chooses a starting value for x, and returns an estimate of the square root of a.

while True:
y = (x + a/x) / 2.0
if y == x:
break
x = y

Instructions
In this assignment, you will use all of the graphics commands you have learned to create an animated scene. Your program should have a clear theme and tell a story. You may pick any school-appropriate theme that you like.

The program must include a minimum of:

5 circles
5 polygons
5 line commands
2 for loops
1 global variable
You may wish to use the standard boilerplate code for simplegui graphics:

import simplegui

def draw_handler(canvas):



frame = simplegui.create_frame('Testing', 600, 600)
frame.set_canvas_background("Black")
frame.set_draw_handler(draw_handler)
frame.start()

Write a Python program that gets a number using keyboard input. (Remember to use input for Python 3 If the number is positive, the program should call countdown. If the number is negative, the program should call countup. Choose for yourself which function to call (countdown or countup) for input of zero.

Provide the following.

•The code of your program.

•Output for the following input: a positive number, a negative number, and zero.

•An explanation of your choice for what to call for input of zero.

write a function norep(x:str)->bool:
if the characters appear twice, it should return False, and character length should be at least 6.