Python3 os.isatty () method
Python3 OS file / directory methods
Outline
os.isatty () method is used to determine if the file descriptor fd is open, and is connected tty (-like) device, it returns true, otherwise False.
grammar
isatty () method syntax is as follows:
os.isatty()
parameter
- no
return value
If the file descriptor fd is open, and connected with the tty (-like) device, it returns true, otherwise False.
Examples
The following example demonstrates isatty () method of use:
#!/usr/bin/python3 import os, sys # 打开文件 fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT ) # 写入字符串 str = "This is w3big.com site" os.write(fd,bytes(str, 'UTF-8')) # 使用 isatty() 查看文件 ret = os.isatty(fd) print ("返回值: ", ret) # 关闭文件 os.close( fd )
The above program output is:
返回值: False