Download · Biopython

Python Tools for Computational Molecular Biology
See also What’s new.
All supported versions of Python include the Python package management tool pip, which allows an easy installation from the command line on all platforms. Try:
For updating an older version of Biopython try:
This will remove older versions of Biopython and NumPy before it installs the recent versions.
Should you wish to uninstall Biopython:
If pip is not already installed you may need to update your Python, but first try:
If you need to install under a specific version of Python, try something like this:
On Windows, by default python and pip are not on the PATH. You can re-install Python and tick this option, or give the full path instead. Try something like this, depending on where your copy of Python is installed:
While we generally recommend using pip to install Biopython using the wheel packages we provide on PyPI (as above), there are also Biopython packages for Conda, Linux, etc.
See https://github.com/biopython/biopython/blob/master/README.rst
If you are still stuck, sign up to the Biopython mailing list and ask for help there.
Some parts of Biopython use the following additional python libraries:
In addition Biopython includes wrapper code for calling a number of third party command line tools including:
Recent releases of Biopython require NumPy (and not Numeric). Version 1.76 is the last release to support Python 2.7 and 3.5, all later releases require Python 3:
Please note that Biopython 1.48 and older require the Numeric library, not its replacement NumPy. Windows installers for Python 2.4 and older are available from the Numerical Python website. A Windows installer for Numeric 24.2 for Python 2.5 is available here:
Please note that Biopython 1.48 and older used mxTextTools 2.0 in some of the parsers. There were a few niggles with mxTextTools 3.0, so ideally install the older mxTextTools 2.0.