TinyDB Materials

tinydb/README.md

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+# TinyDB Tutorial Code (Real Python)
+
+This repository contains the downloadable code for the Real Python tutorial: [TinyDB: A Lightweight JSON Database for Small Projects](https://realpython.com/tinydb-python/)
+
+## Contents
+
+<<<<<<< HEAD
+
+
+create\_db.py            - SCRIPT file containing code from the CREATE section of the tutorial.
+
+read.py               	- REPL code file containing code from the READ section of the tutorial.
+
+update\_db.py 		- SCRIPT file containing code from the UPDATE section of the tutorial.
+
+update\_db\_v2.py 	- SCRIPT file containing code from the UPDATE section of the tutorial.
+
+update\_db\_v3.py 	- SCRIPT file containing code from the UPDATE section of the tutorial.
+
+delete.py 		- REPL code file containing code from the DELETE section of the tutorial.
+
+
+
+countries\_file.csv 	- File containing csv data to be converted to TinyDB documents.
+
+ten\_countries.json 	- File containing an existing JSON object representing ten TinyDB records in a countries table.
+
+
+
+README.md		- This file
+
+=======
+- `create.py` — All code from the **CREATE** section of the tutorial
+- `read.py` — All code from the **READ** section of the tutorial
+- `update.py` — All code from the **UPDATE** section of the tutorial
+- `delete.py` — All code from the **DELETE** section of the tutorial
+- `countries_file.csv` — CSV data used to create TinyDB documents
+- `ten_countries.json` — Sample JSON file containing data for ten countries
+- `README.md` — This file
+>>>>>>> df2997f1b3bd2e296717c85dfa9ec8a08aaa2087

tinydb/countries_file.csv

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+location,population,continent
+Argentina,45929925,South America
+Switzerland,8990428,Europe
+Mozambique,36147236,Africa

tinydb/create_db.py

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+from csv import DictReader
+
+from tinydb import TinyDB
+
+with TinyDB("countries.json", indent=4) as countries_db:
+    countries_table = countries_db.table(name="countries")
+
+    countries_table.insert({"location": "Vatican City", "population": 501})
+
+    countries_table.insert_multiple(
+        [
+            {"location": "India", "population": 1_417_492_000},
+            {"location": "China", "population": 1_408_280_000},
+        ]
+    )
+
+    with open("countries_file.csv", "r") as csv_source:
+        reader = DictReader(csv_source)
+
+        for row in reader:
+            row["population"] = int(row["population"])
+            countries_table.insert(row)

tinydb/delete.py

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+# REPL code
+
+from tinydb import TinyDB, where
+
+countries_db = TinyDB("ten_countries.json")
+countries_table = countries_db.table(name="countries")
+len(countries_table)
+
+countries_table.remove(doc_ids=[3, 5, 7])
+
+len(countries_table)
+
+countries_table.remove(where("population") < 300_000_000)
+len(countries_table)
+
+countries_table.truncate()
+len(countries_table)
+
+countries_db.tables()
+
+countries_db.drop_table(name="countries")
+countries_db.tables()

tinydb/read.py

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+# REPL Code
+
+from pprint import pprint
+
+from tinydb import Query, TinyDB
+
+countries_db = TinyDB("ten_countries.json")
+countries_table = countries_db.table(name="countries")
+query = Query()
+query_def = (query.population > 220_000_000) & (query.population < 250_000_000)
+pprint(countries_table.search(query_def))
+pprint(countries_table.search(query_def))
+pprint(countries_table.search(query["% of world"] >= 17))
+pprint(countries_table.get(doc_ids=[9, 10]))
+countries_db.close()