Upload Files From Client to Server Without Ftp Python

Python - FTP

FTP or File Transfer Protocol is a well-known network protocol used to transfer files between computers in a network. Information technology is created on client server architecture and tin can be used along with user authentication. It can also be used without authentication only that will be less secure. FTP connection which maintains a electric current working directory and other flags, and each transfer requires a secondary connection through which the data is transferred. Near mutual web browsers tin think files hosted on FTP servers.

The Methods in FTP grade

In python we use the module ftplib which has the below required methods to list the files as we will transfer the files.

Method	Clarification
pwd()	Current working directory.
cwd()	Modify current working directory to path.
dir([path[,...[,cb]])	Displays directory listing of path. Optional call-back cb passed to retrlines().
storlines(cmd, f)	Uploads text file using given FTP cmd - for case, STOR file name.
storbinary(cmd,f[, bs=8192])	Like to storlines() but is used for binary files.
delete(path)	Deletes remote file located at path.
mkd(directory)	Creates remote directory.
exception ftplib.error_temp	Exception raised when an error lawmaking signifying a temporary error (response codes in the range 400–499) is received..
exception ftplib.error_perm	Exception raised when an error code signifying a permanent error (response codes in the range 500–599) is received..
connect(host[, port[, timeout]])	Connects to the given host and port. The default port number is 21, as specified past the FTP protocol..
quit()	Closes connection and quits.

Below are the examples of some of the to a higher place methods.

List the Files

The beneath example uses bearding login to the ftp server and lists the content of the current directory. It treates through the name of the files and directories and stores them as a list. Then prints them out.

import ftplib   ftp = ftplib.FTP("ftp.nluug.nl") ftp.login("anonymous", "ftplib-example-one")   data = []   ftp.dir(data.append)   ftp.quit()   for line in data:     print "-", line

When we run the above plan, we become the following output −

- lrwxrwxrwx    1 0        0               1 Nov 13  2012 ftp -> . - lrwxrwxrwx    one 0        0               3 Nov 13  2012 mirror -> pub - drwxr-xr-x   23 0        0            4096 November 27  2017 pub - drwxr-sr-x   88 0        450          4096 May 04 19:thirty site - drwxr-xr-x    nine 0        0            4096 January 23  2014 vol

Changing the Directory

The below program uses the cwd method available in the ftplib module to modify the directory and then fetch the required content.

import ftplib   ftp = ftplib.FTP("ftp.nluug.nl") ftp.login("anonymous", "ftplib-example-1")   data = []   ftp.cwd('/pub/')          modify directory to /pub/ ftp.dir(information.suspend)   ftp.quit()   for line in data:     impress "-", line

When we run the higher up program, we go the following output −

- lrwxrwxrwx    i 504      450            xiv Nov 02  2007 FreeBSD -> bone/BSD/FreeBSD - lrwxrwxrwx    one 504      450            20 November 02  2007 ImageMagick -> graphics/ImageMagick - lrwxrwxrwx    1 504      450            13 November 02  2007 NetBSD -> os/BSD/NetBSD - lrwxrwxrwx    ane 504      450            14 November 02  2007 OpenBSD -> os/BSD/OpenBSD - -rw-rw-r--    1 504      450           932 January 04  2015 README.nluug - -rw-r--r--    i 504      450          2023 May 03  2005 WhereToFindWhat.txt - drwxr-sr-ten    2 0        450          4096 Jan 26  2008 av - drwxrwsr-x    ii 0        450          4096 Aug 12  2004 comp

Fetching the Files

After getting the list of files as shown in a higher place, nosotros tin fetch a specific file past using the getfile method. This method moves a re-create of the file from the remote system to the local organisation from where the ftp connection was initiated.

import ftplib import sys   def getFile(ftp, filename):     try:         ftp.retrbinary("RETR " + filename ,open(filename, 'wb').write)     except:         impress "Mistake"     ftp = ftplib.FTP("ftp.nluug.nl") ftp.login("anonymous", "ftplib-example-1")   ftp.cwd('/pub/')          alter directory to /pub/ getFile(ftp,'README.nluug')   ftp.quit()

When we run the above program, we find the file README.nlug to be present in the local system from where the connection was initiated.