The detach() function in Python is a method used to disconnect a file from its associated file descriptor. This method is commonly used to disassociate a file from a stream object, which can be useful when working with files in Python.
Parameter Values
This function does not accept any parameters.Return Values
The detach() method returns the raw io object underlying a BufferedReader or BufferedWriter.
How to Use detach() in Python
Example 1:
The detach() method separates the underlying raw stream from the io.TextIOBase and returns it.
f = open('file.txt', 'r')
raw_stream = f.detach()
print(raw_stream.read(5))
Example 2:
After using detach(), the TextIOBase object will be in an unusable state (closed), and further operations on it will raise ValueError.
f = open('file.txt', 'r')
raw_stream = f.detach()
print(f.read()) # This will raise ValueError