diff --git a/mysql/CS_Source Code.py b/mysql/CS_Source Code.py new file mode 100644 index 0000000..5612837 --- /dev/null +++ b/mysql/CS_Source Code.py @@ -0,0 +1,233 @@ +"""to maintain student details +roll number +name +percentage +""" +""" +modules imported +""" +import pickle +import os +import time + +import mysql.connector +connection = mysql.connector.connect( + host="localhost", + user="root", + password="12345", + database="student_management" +) +cursor = connection.cursor() +""" +class used +""" + + +class student(object): + def __init__(self): + self.roll = 0 + self.name = "" + self.per = 0 + + def add_rec(self): + self.roll = int(input("Enter roll number: ")) + self.name = input("Enter name: ") + self.name = self.name.upper() + self.per = float(input("Enter percentage: ")) + + sql = "INSERT INTO students (roll, name, percentage) VALUES (%s, %s, %s)" + values = (self.roll, self.name, self.per) + cursor.execute(sql, values) + connection.commit() + + def disp_rec(self): + print("roll number: ", self.roll) + print("name: ", self.name) + print("percentage: ", self.per) + + def display_rec(self): + print("%-10s" % self.roll, "%-20s" % self.name, "%-10s" % self.per) + + def modify_rec(self): + self.roll = int(input("Enter new roll number: ")) + self.name = input("Enter new name: ") + self.name = self.name.upper() + self.per = float(input("Enter new percentage: ")) + +cursor.execute("CREATE TABLE IF NOT EXISTS students(roll int primary key,name varchar(100), percentage int )") + + + +def write_record(): + rec = student() + rec.add_rec() + print("Record added in file!") + input("Press any key to continue....") + + +def display_all(): + print(40 * "=") + print("\n\t Student Records\n") + print(40 * "=") + try: + cursor.execute("SELECT * FROM students") + records = cursor.fetchall() + for row in records: + rec = student() + rec.roll, rec.name, rec.per = row + rec.display_rec() + except mysql.connector.Error as error: + print("Error reading data from MySQL:", error) + + +def search_roll(): + try: + z = 0 + print(40 * "=") + print("Record searching by roll number...") + print(40 * "=") + n = int(input("Enter roll number to search: ")) + cursor.execute("SELECT * FROM students WHERE roll = %s", (n,)) + record = cursor.fetchone() + if record: + rec = student() + rec.roll, rec.name, rec.per = record + z = 1 + print("\nRecord found and details are:\n") + rec.disp_rec() + except mysql.connector.Error as error: + print("Error reading data from MySQL:", error) + if z == 0: + print("Record is not present!!") + input("Press any key to continue....") + + +def search_name(): + try: + z = 0 + print(40 * "=") + print("Record searching by name...") + print(40 * "=") + n = input("Enter name to search: ") + n = n.upper() + cursor.execute("SELECT * FROM students WHERE name = %s", (n,)) + records = cursor.fetchall() + for record in records: + rec = student() + rec.roll, rec.name, rec.per = record + z = 1 + print("\nRecord found and details are:\n") + rec.disp_rec() + except mysql.connector.Error as error: + print("Error reading data from MySQL:", error) + if z == 0: + print("Record is not present!!") + input("Press any key to continue....") + +def modify_roll(): + z = 0 + try: + n = int(input("Enter roll number to modify: ")) + cursor.execute("SELECT * FROM students WHERE roll = %s", (n,)) + record = cursor.fetchone() + if record: + rec = student() + rec.roll, rec.name, rec.per = record + z = 1 + print("\nRecord found and details are:\n") + rec.disp_rec() + print("\nEnter new data...") + rec.modify_rec() + sql = "UPDATE students SET name = %s, percentage = %s WHERE roll = %s" + values = (rec.name, rec.per, rec.roll) + cursor.execute(sql, values) + connection.commit() + print("Record updated!") + except mysql.connector.Error as error: + print("Error updating data in MySQL:", error) + if z == 0: + print("Record not found!!") + input("Press any key to continue....") + +def delete_roll(): + z = 0 + try: + n = int(input("Enter roll number to delete: ")) + cursor.execute("SELECT * FROM students WHERE roll = %s", (n,)) + record = cursor.fetchone() + if record: + rec = student() + rec.roll, rec.name, rec.per = record + z = 1 + print("\nRecord to delete found and details are:\n") + rec.disp_rec() + sql = "DELETE FROM students WHERE roll = %s" + cursor.execute(sql, (rec.roll,)) + connection.commit() + print("Record deleted!") + except mysql.connector.Error as error: + print("Error deleting data in MySQL:", error) + if z == 0: + print("Record not found!!") + input("Press any key to continue....") + +cursor.execute("SELECT * FROM students LIMIT 1") +record = cursor.fetchone() +if record is None: + print("'students' table is empty.") + print("1 -> Generate some fake data") + print("2 -> Go with empty table") + + print(40 * "=") + choice = input("Enter your choice: ") + print(40 * "=") + + if choice == "1": + print("Generating fake data...") + os.system("python create_data.py") + print("Fake data generated.") + elif choice != "2": + print("Invalid choice!") + time.sleep(1) + + + +while True: + os.system("cls") + print(40 * "=") + print( + """ Main Menu + --------- + 1. Add record + 2. Display all records + 3. Search by roll number + 4. Search by name + 5. Modify by roll number + 6. Delete by roll number + 7. Exit + """ + ) + print(40 * "=") + ch = int(input("Enter your choice: ")) + print(40 * "=") + if ch == 1: + write_record() + elif ch == 2: + display_all() + time.sleep(2) + elif ch == 3: + search_roll() + elif ch == 4: + search_name() + elif ch == 5: + modify_roll() + elif ch == 6: + delete_roll() + elif ch == 7: + print("\n\t !!!End!!!\n") + connection.close() + time.sleep(2) + break + else: + print("Invalid choice!!") + time.sleep(1) diff --git a/mysql/create_data.py b/mysql/create_data.py new file mode 100644 index 0000000..4941182 --- /dev/null +++ b/mysql/create_data.py @@ -0,0 +1,48 @@ +from faker import Faker +import random +import mysql.connector + +class Student: + def __init__(self, roll, name, percentage): + self.roll = roll + self.name = name + self.percentage = percentage + +connection = mysql.connector.connect( + host="localhost", + user="root", + password="12345", + database="student_management" +) +cursor = connection.cursor() + +def generate_fake_records(n): + fake = Faker() + records = [] + + for _ in range(n): + roll = random.randint(1000, 9999) + name = fake.name() + percentage = round(random.uniform(50, 100), 2) + + student = Student(roll, name, percentage) + records.append(student) + + return records + +def save_to_database(records): + try: + for record in records: + sql = "INSERT INTO students (roll, name, percentage) VALUES (%s, %s, %s)" + values = (record.roll, record.name, record.percentage) + cursor.execute(sql, values) + + connection.commit() + print(f"{len(records)} records inserted into the database.") + except mysql.connector.Error as e: + print(f"Error inserting records into the database: {e}") + +if __name__ == "__main__": + n = int(input("Enter the number of fake records to generate: ")) + fake_records = generate_fake_records(n) + save_to_database(fake_records)