PostgreSQL client library for Python 3
PostgreSQL client library for Python 3. Simple, fast and lightweight.
$ pip install pgsql
import pgsql # address defaults to ("localhost", 5432), a string must point to a unix socket # user defaults to "postgres" # password defaults to None # database equals user by default db = pgsql.Connection(user = "antti", database = "postgres") print(db("CREATE TABLE people (name TEXT, age INT)")) print(db("INSERT INTO people (name, age) VALUES ($1, $2)", "Veronica", 18)) print(db("SELECT * FROM people")) db.close() # for convenience, connection objects support the with statement with pgsql.Connection(user = "antti", database = "postgres") as db: # you can use .begin(), .commit(), .rollback() manually, or use the with statement with db.transaction(): with db.prepare("INSERT INTO people (name, age) VALUES ($1, $2)") as ps: for person in ("Wallace", 18), ("Keith", 45), ("Lianne", 44): ps(*person) # iterate through and print all the rows represented as tuples people = db.prepare("SELECT * FROM people") for person in people(): print(person) # sometimes instead of an iterator, you want the rows as a list # you may also want to call columns by their name people_over = db.prepare("SELECT * FROM people WHERE age > $1").all for person in people_over(21): print(person.name, "is", person.age - 21, "years over the age of 21") # when the expected result is only one row, it's convenient to call .first person_named = db.prepare("SELECT * FROM people WHERE name = $1 LIMIT 1").first print(person_named("Veronica")) print(person_named("Backup"))
  [('Veronica', 18)] ('Veronica', 18) ('Wallace', 18) ('Keith', 45) ('Lianne', 44) Keith is 24 years over the age of 21 Lianne is 23 years over the age of 21 ('Veronica', 18) None
- Update package description
- Make it possible to execute one-time statements by calling the Connection object
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