Hacker rank Python

 

if __name__ == '__main__':

    result = []  # Initialize result OUTSIDE the loop

    Scorelist = []  # Initialize Scorelist OUTSIDE the loop

    for _ in range(int(input())):

        name = input()

        score = float(input())

        result.append([name, score])

        Scorelist. append(score) #store the score, not a list containing a score.

    b = sorted(list(set(Scorelist)))[1]

    for a, c in sorted(result): # sort() does not create a new list, and sorted () created the new list

        if c == b:

            print(a)

answer: input : 3

if __name__ == '__main__':

    n = int(input()) # get the value in runtime and convert it into an int

    for i in range(1 ,n+1): # range always starts from 0 and ends with n-1 in order to start from 1 and make it to n+1

        print(i , end="") # in print by default prints with \n in order to make it string to display

        i+=1;

expected output: 123

       

if __name__ == '__main__':

    n = int(input()) # reading the input line

    student_marks = {} #

    for _ in range(n): # _ acts as a placeholder and n ranges take from the input

        name, *line = input().split() # splits the input and input and assigns the first value to name and second to * line means list collects the remaining into the list

        scores = list(map(float, line)) # convert into float

        student_marks[name] = scores # assignes the name to values

    query_name = input()

    if query_name in student_marks:

        marks = student_marks[query_name]

        average = sum(marks) / len(marks)

        print(f"{average:.2f}")

import numpy

n, m = map(int, input().split()) # slips the rows and coloumns two dimentional array

array_a = numpy.array([input().split() for _ in range(n)], int)

array_b = numpy.array([input().split() for _ in range(n)], int)

print(array_a + array_b)

print(array_a - array_b)

print(array_a * array_b)

print(array_a // array_b)

print(array_a % array_b)

print(array_a ** array_b)