A Python module and command line tool that provides a simple
interface for the reading, writing, and modifying Fortran namelist files.

A namelist file is parsed and converted into an Namelist object, which
behaves like a standard Python dict. Values are converted from Fortran
data types to equivalent primitive Python types.

The command line tool f90nml can be used to modify individual values inside
of a shell environment. It can also be used to convert the data between
namelists and other configuration formats. JSON and YAML formats are currently
supported.