PycURL – A Python Interface To The cURL library

PycURL is a Python interface to libcurl, the multiprotocol file transfer library. Similarly to the urllib Python module, PycURL can be used to fetch objects identified by a URL from a Python program. Beyond simple fetches however PycURL exposes most of the functionality of libcurl, including:

  • Speed - libcurl is very fast and PycURL, being a thin wrapper above libcurl, is very fast as well. PycURL was benchmarked to be several times faster than requests.

  • Features including multiple protocol support, SSL, authentication and proxy options. PycURL supports most of libcurl’s callbacks.

  • Multi and share interfaces.

  • Sockets used for network operations, permitting integration of PycURL into the application’s I/O loop (e.g., using Tornado).

About libcurl

  • libcurl is a free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet and TFTP. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, Kerberos4), file transfer resume, http proxy tunneling and more!

  • libcurl is highly portable, it builds and works identically on numerous platforms, including Solaris, NetBSD, FreeBSD, OpenBSD, Darwin, HPUX, IRIX, AIX, Tru64, Linux, UnixWare, HURD, Windows, Amiga, OS/2, BeOs, Mac OS X, Ultrix, QNX, OpenVMS, RISC OS, Novell NetWare, DOS and more…

  • libcurl is free, thread-safe, IPv6 compatible, feature rich, well supported, fast, thoroughly documented and is already used by many known, big and successful companies and numerous applications.


  • Python 2.7 or 3.4 through 3.6.

  • libcurl 7.19.0 or better.


On Unix, PycURL is easiest to install using your operating system’s package manager. This will also install libcurl and other dependencies as needed.

Installation via easy_install and pip is also supported:

easy_install pycurl
pip install pycurl

If this does not work, please see PycURL Installation.

On Windows, use pip to install a binary wheel for Python 2.7, 3.5 or 3.6:

pip install pycurl

If not using pip, binary distributions in other formats are available on Bintray.


For support questions, please use curl-and-python mailing list. Mailing list archives are available for your perusal as well.

Although not an official support venue, Stack Overflow has been popular with PycURL users as well.

Bugs can be reported via GitHub. Please only use GitHub issues when you are certain you have found a bug in PycURL. If you do not have a patch to fix the bug, or at least a specific code fragment in PycURL that you believe is the cause, you should instead post your inquiry to the mailing list.

Documentation Contents

Indices and tables