Get Firestore documents in nested collections (async)
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Get Firestore documents in nested collections (async).
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For detailed documentation that includes this code sample, see the following:
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[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis code sample demonstrates how to retrieve Firestore documents within nested collections asynchronously.\u003c/p\u003e\n"],["\u003cp\u003eThe provided Python code utilizes Application Default Credentials for Firestore authentication.\u003c/p\u003e\n"],["\u003cp\u003eThe code iterates through collections within a specified document ("SF" in the "cities" collection) and prints the ID and data of each document found.\u003c/p\u003e\n"],["\u003cp\u003eFurther details and related information can be found in the "Get data with Cloud Firestore" and "Getting data" documentation.\u003c/p\u003e\n"]]],[],null,["# Get Firestore documents in nested collections (async).\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Get data with Cloud Firestore](https://firebase.google.com/docs/firestore/query-data/get-data)\n- [Getting data](/firestore/native/docs/query-data/get-data)\n\nCode sample\n-----------\n\n### Python\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n collections = db.collection(\"cities\").document(\"SF\").collections()\n async for collection in collections:\n async for doc in collection.stream():\n print(f\"{doc.id} =\u003e {doc.to_dict()}\")\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=firestore)."]]
