main.py

referans_json={
        "num":None,
        "stu_num":None,
        "name":None,
        "surname":None,
        "age":None,
        "clas":None,
        "faculty":None,
        "gpa":None
}

class Student:
    def __init__(self,json_in):
        # JSON/DICTIONARY input only !!!
        self.sayi=json_in["num"]
        self.stu_num=json_in["stu_num"]
        self.name=json_in["name"]
        self.surname=json_in["surname"]
        self.age=json_in["age"]
        self.clas=json_in["clas"]
        self.faculty=json_in["faculty"]
        self.gpa=json_in["gpa"]


class Students:
    students_list = []
    def __init__(self,start=0,end=9):
        self.start=start
        self.end=end
        self.students_list = []
        with open("data.txt",mode="r") as data:
            for num,line in enumerate(data.readlines()):
                if num >= start and num <= end:
                    json=data_to_json(referans_json,line)
                    stu_obj=Student(json)
                    self.students_list.append(stu_obj)


# (2*2002*Emre*Demir*20*2*Elektrik*Müh.*82) raw satiri -->> json(dictionary) formatina çevirir !!!

def data_to_json(data):
    json = referans_json
    splited=data.split("*")
    for num,x in enumerate(json.keys()):
        json[x]=int(splited[num]) if splited[num].isdigit() else splited[num]
    return json

# data.bin faylini okumak için başlangiç satir numarasi ve son satir numarasi girişi almaktadir !!!
# varsayilan 0-9 arasi öğrenci bilgisini tek tek json formatda gönderir

def read_from_bin(start=0,end=9):
    with open("../data.bin", mode="r") as f:
        for num,line in enumerate(f.readlines()[1::]):
            if start<=num<=end:
                yield data_to_json(line[:-1:])

# tek bir ögrenci degişikligi json formatda alir ve data.bin'e değişiklik yapar !!!

def write_to_bin(json):
    with open("../data.bin", mode="r+") as f:
        data=[]
        for num,x in enumerate(f.readlines()):
            data.append(x.split("*"))
            if str(json["num"]) == data[num][0] :
                data[num][1] = str(json["stu_num"])
                data[num][2] = str(json["name"])
                data[num][3] = str(json["surname"])
                data[num][4] = str(json["age"])
                data[num][5] = str(json["clas"])
                data[num][6] = str(json["faculty"])
                data[num][7] = str(json["gpa"])+"\n"
        f.seek(0)
        for y in data:
            f.writelines("*".join(y))

# ögrenci bilgisi (json) alir ve data.bin den silir !!!

def delete_from_bin(json):
    with open("../data.bin", mode="r") as f:
        data=[]
        num=0
        for x in f.readlines():
            data.append(x.split("*"))
            if str(json["num"]) == data[num][0]:
                data.pop()
                continue
            data[num][0] = str(num)
            num += 1
        f.seek(0)
        data[0][0]="sayi"
        with open("../data.bin", mode="w+") as h:
            for y in data:
                h.writelines("*".join(y))


def search_from_bin(json):
    finded=[]
    result=[]
    search_index={}
    for num,x in enumerate(json.values()):
        if x is not None:
            search_index[num]=str(x)
    with open("../data.bin", mode="r") as f:
        for y in f.readlines()[1::]:
            num=0
            temp_dic = []
            temp=y.split("*")
            for k,j in search_index.items():
                if j in temp[k]:
                    temp_dic.append(y[:-1:])
                    num+=1
                    continue
            if temp_dic != []:
                finded.append((num,temp_dic[0]))
    sort_find=sorted(finded, key=lambda z: z[0], reverse=True)
    for t in sort_find:
        result.append(t[1])
    return result








temp = {'num': None, 'stu_num': None, 'name': None, 'surname': None, 'age':21, 'clas': None, 'faculty': None, 'gpa': 80}

print(search_from_bin(temp))




# temp = {'num': 4, 'stu_num': 2025, 'name': 'Zeynep', 'surname': 'Kaya', 'age': 19, 'clas': 1, 'faculty': 'Bilgisayar Müh.', 'gpa': 88}