YouTipPython3 Os Write
# Python3.x Python3 os.write() Method
[ Python3 OS File/Directory Methods](#)
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### Overview
The os.write() method is used to write a string to a file descriptor fd. It returns the actual number of bytes written.
It is valid in Unix.
### Syntax
The syntax for the **write()** method is as follows:
os.write(fd, str)
### Parameters
* **fd** -- The file descriptor.
* **str** -- The string to be written.
### Return Value
This method returns the actual number of bytes written.
### Example
The following example demonstrates the use of the write() method:
#!/usr/bin/python3import os, sys # Open a file fd = os.open("f1.txt",os.O_RDWR|os.O_CREAT)# Write a string str = "This is site" ret = os.write(fd,bytes(str, 'UTF-8'))# Print the return valueprint ("The number of bytes written: ")print (ret)print ("Write successful")# Close the file os.close(fd)print ("File closed successfully!!")
Executing the above program produces the following output:
The number of bytes written: 23Write successfulFile closed successfully!!
[ Python3 OS File/Directory Methods](#)