Python: Find the second lowest grade of any student(s) from the given names and grades of each student using lists and Lambda
Python Lambda: Exercise-16 with Solution
Write a Python program to find the second lowest grade of any student(s) from the given names and grades of each student using lists and lambda. Input number of students, names and grades of each student.
Note: If there are multiple students with the same grade then print each name alphabetically.
Sample Solution:
Python Code :
students = []
sec_name = []
second_low = 0
n = int(input("Input number of students: "))
for _ in range(n):
s_name = input("Name: ")
score = float(input("Grade: "))
students.append([s_name,score])
print("\nNames and Grades of all students:")
print(students)
order =sorted(students, key = lambda x: int(x[1]))
for i in range(n):
if order[i][1] != order[0][1]:
second_low = order[i][1]
break
print("\nSecond lowest grade: ",second_low)
sec_student_name = [x[0] for x in order if x[1] == second_low]
sec_student_name.sort()
print("\nNames:")
for s_name in sec_student_name:
print(s_name)
Sample Output:
Input number of students: 5 Name: S ROY Grade: 1 Name: B BOSE Grade: 3 Name: N KAR Grade: 2 Name: C DUTTA Grade: 1 Name: G GHOSH Grade: 1 Names and Grades of all students: [['S ROY', 1.0], ['B BOSE', 3.0], ['N KAR', 2.0], ['C DUTTA', 1.0], ['G GHOSH', 1.0]] Second lowest grade: 2.0 Names: N KAR
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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