Required dependencies

  • Python: >=3.7

  • numpy (1.13.3 or later)


The easiest way to get everything installed is to use conda command line tool:

$ conda install cftime

We recommend using the community maintained conda-forge channel if you need difficult-to-build dependencies such as cartopy or pynio:

$ conda install -c conda-forge cftime

New releases may also appear in conda-forge before being updated in the default channel.

If you don’t use conda, be sure you have the required dependencies (numpy and cython) installed first. Then, install cftime with pip:

$ pip install cftime


When developing we recommend cloning the GitHub repository, building the extension in-place with cython 0.19 or later python build_ext --inplace

and running the test suite to check if the changes are passing the tests pytest --pyargs test