Performs a batch update on a Firestore document (async)

Performs a batch update on a Firestore document (async).

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For detailed documentation that includes this code sample, see the following:

• Transactions and batched writes
• Transactions and batched writes

Code sample

Python

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batch = db.batch()

# Set the data for NYC
nyc_ref = db.collection("cities").document("NYC")
batch.set(nyc_ref, {"name": "New York City"})

# Update the population for SF
sf_ref = db.collection("cities").document("SF")
batch.update(sf_ref, {"population": 1000000})

# Delete DEN
den_ref = db.collection("cities").document("DEN")
batch.delete(den_ref)

# Commit the batch
await batch.commit()

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