Lära Reading and Writing Files: Attendance Records

Managing classroom data efficiently is a common task for teachers, and Python provides powerful tools for handling such data through file operations. By reading from and writing to text files, you can automate the process of recording and tracking attendance, making your workflow smoother and more reliable. Instead of manually updating attendance sheets, you can use simple python scripts to store, retrieve, and update student attendance records, ensuring accuracy and saving valuable time.


              123456
            
# Writing a list of student names to a text file as an attendance record
student_names = ["Alice Johnson", "Ben Lee", "Cara Smith", "David Kim"]

with open("attendance.txt", "w") as file:
    for name in student_names:
        file.write(name + "\n")

When working with files in Python, you use different file modes depending on your needs. The most common modes are:

"r" for reading: opens the file for reading data;
"w" for writing: creates a new file or overwrites an existing one;
"a" for appending: adds new data to the end of the file without removing existing content.

Choosing the correct mode is important for managing classroom data safely. For example, use "w" when you want to start a fresh attendance record and "a" if you want to add new names to an existing list without deleting previous entries. Using "r" allows you to review or process attendance records already saved in the file.


              1234
            
# Reading the attendance record from the file and printing each student's name
with open("attendance.txt", "r") as file:
    for line in file:
        print(line.strip())

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 1

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Fråga vad du vill eller prova någon av de föreslagna frågorna för att starta vårt samtal

Suggested prompts:

Can you explain how to add more student names to the attendance file without deleting the existing ones?

What happens if the attendance file doesn't exist when I try to read it?

Can you show how to check if a student's name is already in the attendance file before adding it?

Svep för att visa menyn


              123456
            
# Writing a list of student names to a text file as an attendance record
student_names = ["Alice Johnson", "Ben Lee", "Cara Smith", "David Kim"]

with open("attendance.txt", "w") as file:
    for name in student_names:
        file.write(name + "\n")

When working with files in Python, you use different file modes depending on your needs. The most common modes are:

"r" for reading: opens the file for reading data;
"w" for writing: creates a new file or overwrites an existing one;
"a" for appending: adds new data to the end of the file without removing existing content.


              1234
            
# Reading the attendance record from the file and printing each student's name
with open("attendance.txt", "r") as file:
    for line in file:
        print(line.strip())

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 1

Reading and Writing Files: Attendance Records

1. What is the purpose of opening a file in 'write' mode?

2. How can file operations help teachers manage classroom data?

3. Which function is used to open a file in Python?

Reading and Writing Files: Attendance Records

1. What is the purpose of opening a file in 'write' mode?

2. How can file operations help teachers manage classroom data?

3. Which function is used to open a file in Python?