bpo-44106: Improve sqlite3 example database contents (GH-26027)

Author: Erlend Egeberg Aasland

Doc/includes/sqlite3/createdb.py

@@ -12,15 +12,15 @@
 con = sqlite3.connect(DB_FILE)
 cur = con.cursor()
 cur.execute("""
-        create table people
+        create table lang
         (
-          name_last      varchar(20),
-          age            integer
+          name           varchar(20),
+          first_appeared integer
         )
         """)
 
-cur.execute("insert into people (name_last, age) values ('Yeltsin',   72)")
-cur.execute("insert into people (name_last, age) values ('Putin',     51)")
+cur.execute("insert into lang (name, first_appeared) values ('Forth', 1970)")
+cur.execute("insert into lang (name, first_appeared) values ('Ada', 1980)")
 
 con.commit()
 

Doc/includes/sqlite3/ctx_manager.py

@@ -1,19 +1,19 @@
 import sqlite3
 
 con = sqlite3.connect(":memory:")
-con.execute("create table person (id integer primary key, firstname varchar unique)")
+con.execute("create table lang (id integer primary key, name varchar unique)")
 
 # Successful, con.commit() is called automatically afterwards
 with con:
-    con.execute("insert into person(firstname) values (?)", ("Joe",))
+    con.execute("insert into lang(name) values (?)", ("Python",))
 
 # con.rollback() is called after the with block finishes with an exception, the
 # exception is still raised and must be caught
 try:
     with con:
-        con.execute("insert into person(firstname) values (?)", ("Joe",))
+        con.execute("insert into lang(name) values (?)", ("Python",))
 except sqlite3.IntegrityError:
-    print("couldn't add Joe twice")
+    print("couldn't add Python twice")
 
 # Connection object used as context manager only commits or rollbacks transactions,
 # so the connection object should be closed manually

Doc/includes/sqlite3/execsql_fetchonerow.py

@@ -3,17 +3,17 @@
 con = sqlite3.connect("mydb")
 
 cur = con.cursor()
-SELECT = "select name_last, age from people order by age, name_last"
+SELECT = "select name, first_appeared from people order by first_appeared, name"
 
 # 1. Iterate over the rows available from the cursor, unpacking the
-# resulting sequences to yield their elements (name_last, age):
+# resulting sequences to yield their elements (name, first_appeared):
 cur.execute(SELECT)
-for (name_last, age) in cur:
-    print('%s is %d years old.' % (name_last, age))
+for name, first_appeared in cur:
+    print(f"The {name} programming language appeared in {first_appeared}.")
 
 # 2. Equivalently:
 cur.execute(SELECT)
 for row in cur:
-    print('%s is %d years old.' % (row[0], row[1]))
+    print(f"The {row[0]} programming language appeared in {row[1]}.")
 
 con.close()

Doc/includes/sqlite3/execsql_printall_1.py

@@ -7,7 +7,7 @@
 cur = con.cursor()
 
 # Execute the SELECT statement:
-cur.execute("select * from people order by age")
+cur.execute("select * from lang order by first_appeared")
 
 # Retrieve all rows as a sequence and print that sequence:
 print(cur.fetchall())

Doc/includes/sqlite3/execute_1.py

@@ -2,22 +2,21 @@
 
 con = sqlite3.connect(":memory:")
 cur = con.cursor()
-cur.execute("create table lang (lang_name, lang_age)")
+cur.execute("create table lang (name, first_appeared)")
 
 # This is the qmark style:
-cur.execute("insert into lang values (?, ?)", ("C", 49))
+cur.execute("insert into lang values (?, ?)", ("C", 1972))
 
 # The qmark style used with executemany():
 lang_list = [
-    ("Fortran", 64),
-    ("Python", 30),
-    ("Go", 11),
+    ("Fortran", 1957),
+    ("Python", 1991),
+    ("Go", 2009),
 ]
 cur.executemany("insert into lang values (?, ?)", lang_list)
 
 # And this is the named style:
-cur.execute("select * from lang where lang_name=:name and lang_age=:age",
-            {"name": "C", "age": 49})
+cur.execute("select * from lang where first_appeared=:year", {"year": 1972})
 print(cur.fetchall())
 
 con.close()

Doc/includes/sqlite3/insert_more_people.py renamed to Doc/includes/sqlite3/insert_more_langs.py

@@ -4,13 +4,13 @@
 
 cur = con.cursor()
 
-newPeople = (
-    ('Lebed'       , 53),
-    ('Zhirinovsky' , 57),
-  )
+languages = (
+    ("Smalltalk", 1972),
+    ("Swift", 2014),
+)
 
-for person in newPeople:
-    cur.execute("insert into people (name_last, age) values (?, ?)", person)
+for lang in languages:
+    cur.execute("insert into lang (name, first_appeared) values (?, ?)", lang)
 
 # The changes will not be saved unless the transaction is committed explicitly:
 con.commit()

Doc/includes/sqlite3/shortcut_methods.py

@@ -1,23 +1,23 @@
 import sqlite3
 
-persons = [
-    ("Hugo", "Boss"),
-    ("Calvin", "Klein")
-    ]
+langs = [
+    ("C++", 1985),
+    ("Objective-C", 1984),
+]
 
 con = sqlite3.connect(":memory:")
 
 # Create the table
-con.execute("create table person(firstname, lastname)")
+con.execute("create table lang(name, first_appeared)")
 
 # Fill the table
-con.executemany("insert into person(firstname, lastname) values (?, ?)", persons)
+con.executemany("insert into lang(name, first_appeared) values (?, ?)", langs)
 
 # Print the table contents
-for row in con.execute("select firstname, lastname from person"):
+for row in con.execute("select name, first_appeared from lang"):
     print(row)
 
-print("I just deleted", con.execute("delete from person").rowcount, "rows")
+print("I just deleted", con.execute("delete from lang").rowcount, "rows")
 
 # close is not a shortcut method and it's not called automatically,
 # so the connection object should be closed manually

Doc/includes/sqlite3/simple_tableprinter.py

@@ -1,13 +1,10 @@
 import sqlite3
 
 FIELD_MAX_WIDTH = 20
-TABLE_NAME = 'people'
-SELECT = 'select * from %s order by age, name_last' % TABLE_NAME
 
 con = sqlite3.connect("mydb")
-
 cur = con.cursor()
-cur.execute(SELECT)
+cur.execute("select * from lang order by name, first_appeared")
 
 # Print a header.
 for fieldDesc in cur.description:

Doc/tools/susp-ignored.csv

@@ -209,8 +209,7 @@ library/smtplib,,:port,method must support that as well as a regular host:port
 library/socket,,::,'5aef:2b::8'
 library/socket,,:can,"return (can_id, can_dlc, data[:can_dlc])"
 library/socket,,:len,fds.frombytes(cmsg_data[:len(cmsg_data) - (len(cmsg_data) % fds.itemsize)])
-library/sqlite3,,:name,"cur.execute(""select * from lang where lang_name=:name and lang_age=:age"","
-library/sqlite3,,:age,"cur.execute(""select * from lang where lang_name=:name and lang_age=:age"","
+library/sqlite3,,:year,"cur.execute(""select * from lang where first_appeared=:year"", {""year"": 1972})"
 library/sqlite3,,:memory,
 library/sqlite3,,:path,"db = sqlite3.connect('file:path/to/database?mode=ro', uri=True)"
 library/ssl,,:My,"Organizational Unit Name (eg, section) []:My Group"