I need help implementing the following class in Python:

Student Class Requirements:

You need to implement the class Student with the following public properties:

Properties:

id$\_$number $($type: int$)$: A unique identifier for the student.

name $($type: str$)$: The name of the student.

course $($type: str$)$: The course the student is enrolled in$.$

Methods:

$\_\_$str$\_\_()$ str:

This method should return a string representation of the student's information in the format:

$"\{$id$\_$number$\}-\{$name$\}-\{$course$\}".$

validate$\_$info$()$ None:

This method should print the message:

"Student information is valid." if the student's information is valid."Student information is not valid." if the information is not valid.

Validity criteria:

The name should contain only letters $($no numbers or special characters$).$The id$\_$number should be exactly $9$ digits long.

Test Cases:

Test Case $1$:

Input: id$\_$number $=123456789,$ name $=$ "John Doe", course $=$ "Computer Science"Expected Output:

$\_$str$\_()$ method should return: $\text{'}123456789-$ John Doe $-$ Computer Science'

Test Case $2$:

Input: id$\_$number $=12345,$ name $=$ "Jane Doe", course $=$ "Mathematics"Expected Output:

$\_$str$\_()$ method should return: $\text{'}12345-$ Jane Doe $-$ Mathematics'

Test Case $3$:

Input: id$\_$number $=987654321,$ name $=$ "Alice$123",$ course $=$ "Physics"Expected Output:

validate$\_$info$()$ method should print: 'Student information is not valid'

Test Case $4$:

Input: id$\_$number $=123456789,$ name $=$ "Jane Doe", course $=$ "Mathematics"Expected Output:

validate$\_$info$()$ method should print: 'Student information is valid'

Additional Notes:

The classes should be defined in their own files, following camelCase naming conventions $($e$.$g$.,$ student.py$).$

The test cases are not outputs of your main file but are part of a hidden test file.

Student Information $-$ Python

by CodeChum Admin

Implement the class Student with the following public details:

Class $-$ Student:

$-$ Public Properties:

$-$ id$\_$number $($type: int$)$: A unique identifier for the student.

$-$ name $($type: str$)$: The name of the student.

$-$ course $($type: str$)$: The course the student is enrolled in$.$

$-$ Methods:

$-\_\_$str$\_()->$ str: Returns a string representation of the student's information in the format $"\backslash \{$id$\_$number$\backslash \}\backslash \{$name$\backslash \}-\backslash \{$course$\backslash \}".$

$-$ validate$\_$info$()->$ None: Prints the message "Student information is valid." or "Student information is not valid." indicating whether the student's information is valid. Validity criteria include:

$-$ The name should contain only letters.

$-$ The idNumber should be exactly $9$ digits long.

Note:

$-$ The test cases are not outputs of your main file but of a hidden test file. Create and implement the classes instructed to test your code.

$-$ Each class should be defined in its own file, with the file name following camelCase conventions $($e$.$g$.,$ bankAccount.py$).$