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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`ColumnTypes` is not JSON serializable","articleBody":"While trying to use a member of the `ColumnTypes` class in a dict object, we get a TypeError: Object of type ColumnTypes is not JSON serializable.\n\nThis is quite counterintuitive as most of the columns functions require a ColumnTypes member instead of a simple string such as 'text' or 'number', whereas you can't provide such a member in an API request such as:\n \n```\nimport requests\nfrom seatable_api import Base, context\nfrom seatable_api.constants import ColumnTypes\n\nbase = Base(context.api_token, context.server_url)\nbase.auth()\n\nurl = f\"https://cloud.seatable.io/api-gateway/api/v2/dtables/{base.dtable_uuid}/columns\"\n\npayload = {\n    \"op_type\": \"modify_column_type\",\n    \"column_data\": {\n        \"table\": \"Table1\",\n        \"other_table\": \"Table2\"\n    },\n    \"table_name\": \"Table1\",\n    \"column\": \"aa\",\n    \"new_column_type\": ColumnTypes.IMAGE # for now, you have to write 'image'\n}\n\nheaders = {\n    \"accept\": \"application/json\",\n    \"content-type\": \"application/json\",\n    \"authorization\": f\"Bearer {base.jwt_token}\"\n}\n\nresponse = requests.put(url, json=payload, headers=headers)\n\nprint(response.text)\n```","author":{"url":"https://github.com/basteks","@type":"Person","name":"basteks"},"datePublished":"2025-10-28T12:02:34.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/109/seatable-api-python/issues/109"}