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Add plugin support for loaders. #3657

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rhattersley wants to merge 3 commits into from
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Add plugin support for loaders. #3657

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7ea7ca9
Add plugin support for loaders.
rhattersley Feb 14, 2020
2b114ee
Try to fix namespace package creation.
rhattersley Feb 16, 2020
dcc6db5
Run changes through black
rhattersley Feb 17, 2020
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17 changes: 17 additions & 0 deletions lib/iris/fileformats/__init__.py
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Expand Up @@ -8,6 +8,9 @@

"""

import importlib
import pkgutil

from iris.io.format_picker import (
FileExtension,
FormatAgent,
Expand All @@ -22,6 +25,7 @@
from . import netcdf
from . import nimrod
from . import pp
import iris.io.plugins as plugins


__all__ = ["FORMAT_AGENT"]
Expand Down Expand Up @@ -234,3 +238,16 @@ def _load_grib(*args, **kwargs):
"ABL", FileExtension(), ".abl", abf.load_cubes, priority=3
)
)


#
# Plugin-based format support.
#
_module_names = [info.name for info in pkgutil.iter_modules(plugins.__path__)]
_modules = [
importlib.import_module(f"{plugins.__name__}.{name}")
for name in _module_names
]
for _module in _modules:
for _spec in getattr(_module, "FORMAT_SPECIFICATIONS", []):
FORMAT_AGENT.add_spec(_spec)
1 change: 1 addition & 0 deletions lib/iris/io/plugins/README.md
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@@ -0,0 +1 @@
This is a namespace package for use by I/O plugins.
3 changes: 2 additions & 1 deletion setup.py
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Expand Up @@ -260,8 +260,9 @@ def extract_version():
"library for analysing and visualising Earth science data",
long_description=description,
long_description_content_type="text/markdown",
packages=find_package_tree("lib/iris", "iris"),
packages=find_package_tree("lib/iris", "iris") + ["iris.io.plugins"],
package_dir={"": "lib"},
package_data={"iris.io.plugins": ["README.md"]},
include_package_data=True,
cmdclass=custom_commands,
zip_safe=False,
Expand Down