How to get the system configuration information relevant to an open file using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 12:12:58
You can call the fpathconf(file_descriptor, name) function to get the system configuration information relevant to an open file. name 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. Note that ... Read More

How to copy files to a new directory using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 12:08:57
The shutil module provides functions for copying files, as well as entire folders. For copying multiple files at once, you'll have to have a list of all files you want to copy and loop over them to copy them.Calling shutil.copy(source, destination) will copy the file at the path source to ... Read More

How do I copy a file in python?

Rajendra Dharmkar
Published on 26-Dec-2017 12:04:33
The shutil module provides functions for copying files, as well as entire folders.Calling shutil.copy(source, destination) will copy the file at the path source to the folder at the path destination. (Both source and destination are strings.) If destination is a filename, it will be used as the new name of ... Read More

How to create a duplicate file of an existing file using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 12:01:31
The shutil module provides functions for copying files, as well as entire folders.Calling shutil.copy(source, destination) will copy the file at the path source to the folder at the path destination. (Both source and destination are strings.) If destination is a filename, it will be used as the new name of ... Read More

How to close all the opened files using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 11:36:16
There is no way in python natively to track all opened files. To do that you should either track all the files yourself or always use the with statement to open files which automatically closes the file as it goes out of scope or encounters an error. For example, with ... Read More

How to change the root directory of the current process in Python?

Rajendra Dharmkar
Published on 26-Dec-2017 11:23:00
You can use the os.chroot to change the root directory of the current process to path. This command is only available on Unix systems. You can use it as follows:>>> import os >>> os.chroot('/tmp/my_folder')This changes the root directory of the script running to /tmp/my_folder.Read More

How to change the user and group permissions for a directory using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 11:19:14
You can change the owner of a file or a directory using the pwd, grp and os modules. The uid module is used to get the uid from user name, grp to get gid group name string and os to change the owner:import pwd import grp import os uid = ... Read More

How to change the owner of a file using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 11:16:19
You can change the owner of a file or a directory using the pwd, grp and os modules. The uid module is used to get the uid from user name, grp to get gid group name string and os to change the owner:import pwd import grp import os uid = ... Read More

How to change the mode of a file using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 11:08:23
To change the permission of a file, you can use the os.chmod(file, mode) call. Note that the mode should be specified in octal representation and therefore must begin with a 0o. For example, to make a file readonly, you can set the permission to 0o777, you can use:>>> import os ... Read More

How to concatenate two files into a new file using Python?

Rajendra Dharmkar
Published on 26-Dec-2017 11:04:11
To merge multiple files in a new file, you can simply read files and write them to a new file using loops. For example, filenames = ['file1.txt', 'file2.txt', 'file3.txt'] with open('output_file', 'w') as outfile:     for fname in filenames:         with open(fname) as infile:     ... Read More
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