Converting a CSV with a WKT column to a Shapefile

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Using ogr2ogr in Python, I am trying to convert a CSV to a shapefile. One column in the CSV, named "Polygon", contains WKT like this: POLYGON((long lat, long lat, long lat, etc.)) Currently, I can make a polygon shapefile with the correct projection, but the geometry is empty. How can I modify my ogr2ogr arguments to correctly create the geometry using the WKT in each row? Currently I have something like this:

ogr2ogr.main(["", "-a_srs", "EPSG:4326", "-f", "ESRI Shapefile", "output.shp", "input.csv", "-nlt", "POLYGON"])

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