(i) What is the advantage of using with clause while opening a data file in Python ? Also give syntax of with clause. (ii) A binary file, EMP.DAT has the following structure: [code] where - Emp_Id : E

Question

(i) What is the advantage of using with clause while opening a data file in Python ? Also give syntax of with clause.

(ii) A binary file, EMP.DAT has the following structure:

text

[Emp_Id, Name, Salary]

where - Emp_Id : Employee id - Name : Employee Name - Salary : Employee Salary

Write a user defined function, disp_Detail(), that would read the contents of the file EMP.DAT and display the details of those employees whose salary is below 25000.

Accepted Answer

(i)
The advantage of using the **with** clause is that any file opened using it is closed automatically once control leaves the with block — even if an exception is raised.

Syntax:
```python
with open(file_name, access_mode) as file_object:
    # operations
```

Example:
```python
with open("myfile.txt", "r+") as file_object:
    content = file_object.read()
```

(ii)
```python
import pickle

def disp_Detail():
    try:
        with open("EMP.DAT", "rb") as F:
            try:
                while True:
                    Data = pickle.load(F)
                    if Data[2] < 25000:
                        print(Data)
            except EOFError:
                pass
    except:
        print("File Not Found!!!")
```

Question 34(or)

Answer

Explanation