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Python: Modify the attribute values of a given class

Python Class ( Basic ): Exercise-9 with Solution

Write a Python class named Student with two attributes student_name, marks. Modify the attribute values of the said class and print the original and modified values of the said attributes.

Sample Solution:

Python Code:

class Student:
    student_name = 'Terrance Morales'
    marks = 93  
print(f"Student Name: {getattr(Student, 'student_name')}")
print(f"Marks: {getattr(Student, 'marks')}")
setattr(Student, 'student_name', 'Angel Brooks')
setattr(Student, 'marks', 95) 
print(f"Student Name: {getattr(Student, 'student_name')}")
print(f"Marks: {getattr(Student, 'marks')}")

Sample Output:

Student Name: Terrance Morales
Marks: 93
Student Name: Angel Brooks
Marks: 95

Flowchart:

Flowchart: Modify the attribute values of a given class.

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Previous: Write a Python program to crate two empty classes, Student and Marks. Now create some instances and check whether they are instances of the said classes or not. Also, check whether the said classes are subclasses of the built-in object class or not.
Next: Write a Python class named Student with two attributes student_id, student_name. Add a new attribute student_class and display the entire attribute and their values of the said class. Now remove the student_name attribute and display the entire attribute with values.

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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