MongoDB からのデータの読み取り

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import pymongo
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from pymongo import MongoClient
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try:
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    uri = "<connection string URI>"
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    client = MongoClient(uri)
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    database = client["<database name>"]
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    collection = database["<collection name>"]
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    # start example code here
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    # end example code here
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    client.close()
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except Exception as e:
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    raise Exception(
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        "The following error occurred: ", e)

results = collection.find_one({ "<field name>" : "<value>" })
print(results)

results = collection.find({ "<field name>" : "<value>" })
for document in results:
    print(document)

count = collection.count_documents({})
print(count)

count = collection.count_documents({ "<field name>": "<value>" })
print(count)

count = collection.estimated_document_count()
print(count)

results = collection.distinct("<field name>")
for document in results:
    print(document)

with collection.watch() as stream:
    for change in stream:
        print(change)