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Python os.fpathconf() Method
Description
Python method fpathconf() returns system configuration information relevant to an open file.This variable is very similar to unix system call fpathconf() and accept the similar arguments.
Syntax
Following is the syntax for fpathconf() method −
os.fpathconf(fd, name)
Parameters
fd − This is the file descriptor for which system configuration information is to be returned.
name − This specifies the configuration value to retrieve; it may be a string, which is the name of a defined system value; these names are specified in a number of standards (POSIX.1, Unix 95, Unix 98, and others). The names known to the host operating system are given in the os.pathconf_names dictionary.
Return Value
This method returns system configuration information relevant to an open file.
Example
The following example shows the usage of fpathconf() method.
#!/usr/bin/python import os, sys # Open a file fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT ) print "%s" % os.pathconf_names # Now get maximum number of links to the file. no = os.fpathconf(fd, 'PC_LINK_MAX') print "Maximum number of links to the file. :%d" % no # Now get maximum length of a filename no = os.fpathconf(fd, 'PC_NAME_MAX') print "Maximum length of a filename :%d" % no # Close opened file os.close( fd) print "Closed the file successfully!!"
When we run above program, it produces following result −
{'PC_MAX_INPUT': 2, 'PC_VDISABLE': 8, 'PC_SYNC_IO': 9, 'PC_SOCK_MAXBUF': 12, 'PC_NAME_MAX': 3, 'PC_MAX_CANON': 1, 'PC_PRIO_IO': 11, 'PC_CHOWN_RESTRICTED': 6, 'PC_ASYNC_IO': 10, 'PC_NO_TRUNC': 7, 'PC_FILESIZEBITS': 13, 'PC_LINK_MAX': 0, 'PC_PIPE_BUF': 5, 'PC_PATH_MAX': 4} Maximum number of links to the file. :127 Maximum length of a filename :255 Closed the file successfully!!