Question

use python code complete this question

'Assignment 3 o Get information until getting 'n' from user Input the name of 1th student : 84 Input the math score of 1th student : 90 Input the english score of 1th student : 80 Input the science score of lth student : 100 Keep moving? (y/n): y Input the name of 2th student : 981 Input the math score of 2th student : 70 Input the english score of 2th student : 99 Input the science score of 2th student : 88 Keep moving? (y/n): n

Answer 1

Answer:

import pandas as pd
import numpy as np
print("Hello World")
name_list=[]
maths_list=[]
english_list=[]
science_list=[]
i=1
while True:
    name=input("Enter the details of "+str(i)+"th student :")
    maths=int(input("Enter the math score of "+str(i)+"th student :"))
    english=int(input("Enter the english score of "+str(i)+"th student :"))
    science=int(input("Enter the science score of "+str(i)+"th student :"))
    name_list.append(name)
    maths_list.append(maths)
    english_list.append(english)
    science_list.append(science)
    i=i+1
    choice=input("keep moving y/n?")
    if choice=="n":
        break
dictionary1={"name":name_list,"english":english_list,"maths":maths_list,"science":science_list}
print(dictionary1)
df1=pd.DataFrame(dictionary1)
print(df1)

textfile = open('class.txt', 'a')
textfile.write(df1.to_string(header=True,index=False))
textfile.close()

Explanation:

First we need to declare 4 empty lists.one is used to store the students name and remaining 3 lists are used to store the subjects scores.

Initially we don't know number of students .It depends upon the user choice.If user's choice is n then we need to beak the while loop,otherwise we need to continue the iteration.i value is 1 and we need to take 4 inputs from the user.The input we are receiving from the user will be in string format.So we are converting marks to int type.we are appending name into name list and scores into corresponding scores list and increment the i value by 1.We need to ask if the user want to continue or not by taking the input .if the input string is "n" then the loop will break automatically otherwise it will continue.

Once we are exited from the while loop.We need to create a dictionary for storing values in the data frame.Once we have stored all the values in the data frame ,we can directly dump those values into the text file.

Data frame stores values in a tabular format(Rows and columns). Each row is having index and that will contain related data of a student.

open() function will create a text file .we can write the data frame into the text file by eliminating the indexes.

Note:still if you found any queries,let me know.Thank you