18 Different documents count methods - MongoDB Aggregation Tutorial

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[muskanidris]

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[firmanjamal]

I was following all your tutorials and when I tested $count: "total" in aggregation I get an error "Unrecognized pipeline stage name: '$count'".

[zubee]

I tried using the count method in pandas, I keep getting this error;
AttributeError: 'Cursor' object has no attribute 'count'
This is the code;
dw_db = client.doctorwho
tc = dw_db.test_collection

tc.insert_one({'name': 'William', 'birthyear': 1908})

# Insert a few (zip takes some lists and returns a list of tuples)
for n, b in zip('Patrick Jon Tom Peter Colin Sylvester Paul Christopher David Matt Peter'.split(),
[1920, 1919, 1934, 1951, 1943, 1943, 1959, 1964, 1971, 1982, 1958]):
tc.insert_one({'name': n, 'birthyear': b})

dw_db.tc.find({'name': 'Peter'}).count()