Can I upload an object in memory to FTP using Python?

Here's what I'm doing now:

mysock = urllib.urlopen('http://localhost/image.jpg')
fileToSave =
oFile = open(r"C:\image.jpg",'wb')
ftp.storbinary('STOR '+os.path.basename('image.jpg'),f)

Writing files to disk and then imediately deleting them seems like extra work on the system that should be avoided. Can I upload an object in memory to FTP using Python?

Because of duck-typing, the file object (f in your code) only needs to support the .read(blocksize) call to work with storbinary. When faced with questions like this, I go to the source, in this case lib/python2.6/

def storbinary(self, cmd, fp, blocksize=8192, callback=None):
    """Store a file in binary mode.  A new port is created for you.

      cmd: A STOR command.
      fp: A file-like object with a read(num_bytes) method.
      blocksize: The maximum data size to read from fp and send over
                 the connection at once.  [default: 8192]
      callback: An optional single parameter callable that is called on
                on each block of data after it is sent.  [default: None]

      The response code.
    self.voidcmd('TYPE I')
    conn = self.transfercmd(cmd)
    while 1:
        buf =
        if not buf: break
        if callback: callback(buf)
    return self.voidresp()

As commented, it only wants a file-like object, indeed it not even be particularly file-like, it just needs read(n). StringIO provides such "memory file" services.

How to FTP with Python: The Basics, Python has a fully mature FTP library that any script can utilize with a simple import Open a terminal prompt or an IDLE session, and start with the import Lines 11 through 13 open a file object ('README') for writing on our  Of course, in order to do FTP uploads with Python, you need an active internet connection, so that Python can connect with the FTP server. And this how you can do file uploads via FPT using the ftplib module in Python. Related Resources. How to Randomly Select From or Shuffle a List in Python

import urllib
import ftplib

ftp = ftplib.FTP(...)
f = urllib.urlopen('http://localhost/image.jpg')
ftp.storbinary('STOR image.jpg', f)

FTP, Read and write managed folders. Note. You can use the DSS Download recipe to cache the contents from a FTP server. This can provide better performance if  A GUI client can helps a lot, but for more complex tasks, you may need to use a script to manipulate your FTP server. Uploading file with Python is easy and simple, to get started, you need to know the following 3 steps. Step 1. Create connection to FTP server with Python ftplib module. The ftplib module in the Python standard library is the go-to choice for ftp scripting. It's bascially a FTP client implementation in Python, simple and easy for common ftp tasks.

Amazon Simple Storage Service (S3) — Cloud Storage, million times or only for emergency disaster recovery; build a simple FTP application, The largest object that can be uploaded in a single PUT is 5 gigabytes. Alternatively, you can use S3 Object Tagging to organize your data across all of in their S3 buckets, and streams the object contents into memory for analysis. Using Python ftplib library for File transfer. As python have the rich set of library for doing task automation when it comes to file transfer over FTP server there are many libraries available in python like ftplib, ftputil, paramiko, fabric etc.

scp · PyPI, scp module for paramiko. from paramiko import SSHClient from scp import SCPClient ssh The putfo method can be used to upload file-like objects: argument scp = SCPClient(ssh.get_transport()) # generate in-memory file-like object fl = io. In the example below we print the percentage complete of the file transfer. This article will show how you can use FTP in Python with the help of the ftplib module. Ftplib. The ftplib module in Python allows you to write Python programs that perform a variety of automated FTP jobs. You can easily connect to a FTP server to retrieve files and process them locally.

More complex APIs: Upload and Download Files with Flask , Files with Flask¶. This example demonstrates uploading and downloading files to and from a Flask API. Python object: api Then, using Python requests (or any other suitable HTTP client), you can list the files on the server with: import  The FTP class of the ftplib module implements the client side of FTP communications. A Python client using the FTP class can connect to an FTP server to perform a variety of tasks, such as file downloads, uploads, and even mirroring the server. To use the ftplib functions, we’ll need to start by importing the module. We can use one of the few free FTP servers on the net that allow anonymous logins,, to test the functionality of the FTP library.

Python Module Index, cgi, Helpers for running Python scripts via the Common Gateway Interface. difflib, Helpers for computing differences between objects. ftplib, FTP protocol client (requires sockets). imp, Deprecated: Access the implementation of the import statement. mmap, Interface to memory-mapped files for Unix and Windows. ftp script upload 1 12795 In this article we will see how to connect to, login and upload a file to FTP server using python. We will require a publicly available FTP server to test our code. You can use below details for same.

  • Can you use a file-like object?
  • Great answer. I figured this should work, but couldn't wrap my head around it.
  • ftplib doesn't allow you to send StringIO you have to pass BytesIO