SCHOOL RESOURCES ARCHIVE

All school related resources stored here. (maintained by Sujal Singh)

RESOURCE LIST


Q1) A blood bank maintains a binary file that contains following information for every donor: name,
date of birth, address, phone number and blood group. Write a program in Python to do the following
(using user defined functions):
a) Create the file of donors [donor.dat]
b) Display the records.
c) For Input of a specific blood group, display the name and address of donors of
that blood group.

"""
Q1) A blood bank maintains a binary file that contains following information for every donor: name,
date of birth, address, phone number and blood group. Write a program in Python to do the following
(using user defined functions):
    a) Create the file of donors [donor.dat]
    b) Display the records.
    c) For Input of a specific blood group, display the name and address of donors of
     that blood group.
"""
import pickle


def create():
    # COLLECT USER INPUT
    data = []
    while input("Enter values (y/n): ").lower() == "y":
        data.append([
            input("Enter donor name: "),
            input("Enter DOB (dd/mm/yyyy): "),
            input("Enter address: "),
            input("Enter phone number: "),
            input("Enter blood group: ")
        ])

    # (CREATE AND) WRITE TO BINARY FILE
    with open("donor.dat", "wb") as db:
        pickle.dump(data, db)


def display():
    with open("donor.dat", "rb") as db:
        data = pickle.load(db)

    template = "| {:^20} || {:^20} || {:^20} || {:^20} || {:^20} |"
    for donor in data:
        print(template.format(*donor))


def seek():
    with open("donor.dat", "rb") as db:
        data = pickle.load(db)

    wanted_group = input("Enter the desired blood group: ")
    for donor in data:
        if donor[-1] == wanted_group:
            print(
                f"Name: {donor[0]}",
                f"Address: {donor[2]}\n", sep="\n"
            )


def menu():
    while True:
        choice = input(
            "\n\n"
            "1. Create donor database\n"
            "2. Display donor records\n"
            "3. Find Donor by blood group\n"
            "4. Exit\n"
            "Enter your choice: "
        )

        if choice == "1":
            create()
        elif choice == "2":
            display()
        elif choice == "3":
            seek()
        elif choice == "4":
            print("Exiting...")
            break
        else:
            print("Invalid choice... Try again...")


menu()


Q2) A school maintains a binary file that contains following information for every student: roll
number, name, marks and grade. Write a program in Python to do the following (using user defined
functions):
a) Create the file of students [student.dat]
b) Display the records of all ‘A’ grade students.

"""
Q2) A school maintains a binary file that contains following information for every student: roll
number, name, marks and grade. Write a program in Python to do the following (using user defined
functions):
    a) Create the file of students [student.dat]
    b) Display the records of all ‘A’ grade students.
"""
import pickle


def create():
    # COLLECT USER INPUT
    data = []
    while input("Enter values (y/n): ").lower() == "y":
        data.append([
            int(input("Enter roll number: ")),
            input("Enter student name: "),
            float(input("Enter marks: ")),
            input("Enter grade: ").upper()
        ])

    # (CREATE AND) WRITE TO BINARY FILE
    with open("student.dat", "wb") as db:
        pickle.dump(data, db)


def display():
    with open("student.dat", "rb") as db:
        data = pickle.load(db)

    a_graders = [f"{s[1]} ({s[0]})" for s in data if s[-1] == "A"]
    if a_graders:
        print("Students with A grade:", *a_graders, sep="\n")
    else:
        print("No toppers in this stupid class.")


def menu():
    while True:
        choice = input(
            "\n\n"
            "1. Create student database\n"
            "2. Display students with A grade\n"
            "3. Exit\n"
            "Enter your choice: "
        )

        if choice == "1":
            create()
        elif choice == "2":
            display()
        elif choice == "3":
            print("Exiting...")
            break
        else:
            print("Invalid choice... Try again...")


menu()


Q3) Write program in Python to do the following (using user defined functions):
a) Create a CSV file containing word and its meaning.
b) Determine the meaning for the given word.
c) To display all word and meanings

"""
Q3) Write program in Python to do the following (using user defined functions):
    a) Create a CSV file containing word and its meaning.
    b) Determine the meaning for the given word.
    c) To display all word and meanings
"""
import csv


def create():
    rows = []
    while input("Enter values (y/n): ").lower() == "y":
        rows.append([
            input("Enter word: ").lower(),
            input("Enter meaning of word: ")
        ])

    with open("dictionary.csv", "w", newline="") as file:
        csv.writer(file).writerows(rows)


def find_meaning():
    word = input("Enter the word you are looking for: ").lower()
    with open("dictionary.csv", newline="") as file:
        data = [w for w in csv.reader(file) if w[0] == word]

    if data:
        print("{} means: {}".format(*data[0]))
    else:
        print("No such word found.")


def display():
    with open("dictionary.csv", newline="") as file:
        data = csv.reader(file)
        for word in data:
            print("{}: {}".format(*word))


def menu():
    while True:
        choice = input(
            "\n\n"
            "1. Create Dictionary\n"
            "2. Find meaning of a word\n"
            "3. Display all words\n"
            "4. Exit\n"
            "Enter your choice: "
        )

        if choice == "1":
            create()
        elif choice == "2":
            find_meaning()
        elif choice == "3":
            display()
        elif choice == "4":
            print("Exiting...")
            break
        else:
            print("Invalid choice... Try again...")


menu()


Q4) Write a menu driven program in Python to do the following(using user defined functions) :
a) to create a text file “MYFILE.TXT” and store strings in it .
b) display all strings of the text file.
c) to count the number of words starting with ‘A’ .

"""
Q4) Write a menu driven program in Python to do the following(using user defined functions) :
    a) to create a text file “MYFILE.TXT” and store strings in it .
    b) display all strings of the text file.
    c) to count the number of words starting with ‘A’ .
"""


def create():
    file = open("MYFILE.TXT", "w")
    while input("Enter lines (y/n): ").lower() == "y":
        file.write(input("Enter string: ") + "\n")
    file.close()


def display():
    print("Contents of the file are as follows:")
    with open("MYFILE.TXT") as file:
        print(file.read())


def count():
    with open("MYFILE.TXT") as file:
        words = file.read().split()
        words = [w for w in words if w[0].upper() == "A"]

    if words:
        print(len(words), " words start with A, these are:\n", "\n".join(words), sep="")
    else:
        print("No word starts with A in this file.")


def menu():
    while True:
        choice = input(
            "\n\n"
            "1. Create file\n"
            "2. Display file\n"
            "3. Count words starting with A\n"
            "4. Exit\n"
            "Enter your choice: "
        )

        if choice == "1":
            create()
        elif choice == "2":
            display()
        elif choice == "3":
            count()
        elif choice == "4":
            print("Exiting...")
            break
        else:
            print("Invalid choice... Try again...")


menu()


Q5) Write a menu driven program in Python to do the following using user defined functions:
a) to create a text file “DIARY.TXT” and store strings in it .
b) display all strings of the text file.
c) to count the no. of “Me” or “My” words present in a text file “DIARY.TXT”.
If the file “DIARY.TXT” content is as follows :
My first book was Me and My family. It gave me a chance to be known to the world.
The output of the function should be
Count of Me/My in file : 4

"""
Q5) Write a menu driven program in Python to do the following using user defined functions:
    a) to create a text file “DIARY.TXT” and store strings in it .
    b) display all strings of the text file.
    c) to count the no. of “Me” or “My” words present in a text file “DIARY.TXT”.
If the file “DIARY.TXT” content is as follows :
My first book was Me and My family. It gave me a chance to be known to the world.
The output of the function should be
Count of Me/My in file : 4
"""


def create():
    file = open("DIARY.TXT", "w")
    while input("Enter lines (y/n): ").lower() == "y":
        file.write(input("Enter string: ") + "\n")
    file.close()


def display():
    print("Contents of the file are as follows:")
    with open("DIARY.TXT") as file:
        print(file.read())


def count():
    with open("DIARY.TXT") as file:
        data = file.read().split()
        data = [w for w in data if w.lower() in ("me", "my")]

    if data:
        print("Count of Me/My in file:", len(data))
    else:
        print("No instances of Me and My in file.")


def menu():
    while True:
        choice = input(
            "\n\n"
            "1. Create file\n"
            "2. Display file\n"
            "3. Count Me My words\n"
            "4. Exit\n"
            "Enter your choice: "
        )

        if choice == "1":
            create()
        elif choice == "2":
            display()
        elif choice == "3":
            count()
        elif choice == "4":
            print("Exiting...")
            break
        else:
            print("Invalid choice... Try again...")


menu()

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