FabricDataFrames dynamically expose semantic functions based on logic defined by each function. For example, the is_holiday function shows up in the autocomplete suggestions when you're working on a FabricDataFrame containing both a datetime column and a country column.
Each semantic function uses information about the data types, metadata (such as Power BI data categories), and the data in a FabricDataFrame or FabricSeries to determine its relevance to the particular data on which you're working.
Semantic functions are automatically discovered when annotated with the @semantic_function decorator. You can think of semantic functions as being similar to C# extension methods applied to the popular DataFrame concept.
```python
from sempy.fabric import FabricDataFrame
df = FabricDataFrame({
"lat": [40.7128, 47.8095, 47.8095, 47.8095],
"long": [-74.0060, 13.0550, 13.0550, 13.0550],
"date": ["2023-01-06", "2023-01-06", "2023-01-07", "2023-01-10"]
},
column_metadata={"lat": {"data_category": "Latitude"}, "long": {"data_category": "Longitude"}},
)
df["date"] = pd.to_datetime(df["date"])
df_weather = df.add_weather_meteostat("lat", "long", "date")
```
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"description": "FabricDataFrames dynamically expose semantic functions based on logic defined by each function. For example, the is_holiday function shows up in the autocomplete suggestions when you're working on a FabricDataFrame containing both a datetime column and a country column.\n\nEach semantic function uses information about the data types, metadata (such as Power BI data categories), and the data in a FabricDataFrame or FabricSeries to determine its relevance to the particular data on which you're working.\n\nSemantic functions are automatically discovered when annotated with the @semantic_function decorator. You can think of semantic functions as being similar to C# extension methods applied to the popular DataFrame concept.\n\n```python\nfrom sempy.fabric import FabricDataFrame\n\ndf = FabricDataFrame({\n \"lat\": [40.7128, 47.8095, 47.8095, 47.8095],\n \"long\": [-74.0060, 13.0550, 13.0550, 13.0550],\n \"date\": [\"2023-01-06\", \"2023-01-06\", \"2023-01-07\", \"2023-01-10\"]\n },\n column_metadata={\"lat\": {\"data_category\": \"Latitude\"}, \"long\": {\"data_category\": \"Longitude\"}},\n)\n\ndf[\"date\"] = pd.to_datetime(df[\"date\"])\n\ndf_weather = df.add_weather_meteostat(\"lat\", \"long\", \"date\")\n\n```\n\n\n",
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