Move the 3k reST doc tree in place.

29 files changed, 511 insertions, 0 deletions

diff --git a/Doc/includes/sqlite3/adapter_datetime.py b/Doc/includes/sqlite3/adapter_datetime.py
new file mode 100644
index 0000000000..5869e22b32
--- /dev/null
+++ b/Doc/includes/sqlite3/adapter_datetime.py
@@ -0,0 +1,14 @@
+import sqlite3
+import datetime, time
+
+def adapt_datetime(ts):
+    return time.mktime(ts.timetuple())
+
+sqlite3.register_adapter(datetime.datetime, adapt_datetime)
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+
+now = datetime.datetime.now()
+cur.execute("select ?", (now,))
+print(cur.fetchone()[0])
diff --git a/Doc/includes/sqlite3/adapter_point_1.py b/Doc/includes/sqlite3/adapter_point_1.py
new file mode 100644
index 0000000000..1343acde3c
--- /dev/null
+++ b/Doc/includes/sqlite3/adapter_point_1.py
@@ -0,0 +1,16 @@
+import sqlite3
+
+class Point(object):
+    def __init__(self, x, y):
+        self.x, self.y = x, y
+
+    def __conform__(self, protocol):
+        if protocol is sqlite3.PrepareProtocol:
+            return "%f;%f" % (self.x, self.y)
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+
+p = Point(4.0, -3.2)
+cur.execute("select ?", (p,))
+print(cur.fetchone()[0])
diff --git a/Doc/includes/sqlite3/adapter_point_2.py b/Doc/includes/sqlite3/adapter_point_2.py
new file mode 100644
index 0000000000..1e1719a3cc
--- /dev/null
+++ b/Doc/includes/sqlite3/adapter_point_2.py
@@ -0,0 +1,17 @@
+import sqlite3
+
+class Point(object):
+    def __init__(self, x, y):
+        self.x, self.y = x, y
+
+def adapt_point(point):
+    return "%f;%f" % (point.x, point.y)
+
+sqlite3.register_adapter(Point, adapt_point)
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+
+p = Point(4.0, -3.2)
+cur.execute("select ?", (p,))
+print(cur.fetchone()[0])
diff --git a/Doc/includes/sqlite3/collation_reverse.py b/Doc/includes/sqlite3/collation_reverse.py
new file mode 100644
index 0000000000..bfd7f5bd9f
--- /dev/null
+++ b/Doc/includes/sqlite3/collation_reverse.py
@@ -0,0 +1,15 @@
+import sqlite3
+
+def collate_reverse(string1, string2):
+    return -cmp(string1, string2)
+
+con = sqlite3.connect(":memory:")
+con.create_collation("reverse", collate_reverse)
+
+cur = con.cursor()
+cur.execute("create table test(x)")
+cur.executemany("insert into test(x) values (?)", [("a",), ("b",)])
+cur.execute("select x from test order by x collate reverse")
+for row in cur:
+    print(row)
+con.close()
diff --git a/Doc/includes/sqlite3/complete_statement.py b/Doc/includes/sqlite3/complete_statement.py
new file mode 100644
index 0000000000..cd38d7305b
--- /dev/null
+++ b/Doc/includes/sqlite3/complete_statement.py
@@ -0,0 +1,30 @@
+# A minimal SQLite shell for experiments
+
+import sqlite3
+
+con = sqlite3.connect(":memory:")
+con.isolation_level = None
+cur = con.cursor()
+
+buffer = ""
+
+print("Enter your SQL commands to execute in sqlite3.")
+print("Enter a blank line to exit.")
+
+while True:
+    line = input()
+    if line == "":
+        break
+    buffer += line
+    if sqlite3.complete_statement(buffer):
+        try:
+            buffer = buffer.strip()
+            cur.execute(buffer)
+
+            if buffer.lstrip().upper().startswith("SELECT"):
+                print(cur.fetchall())
+        except sqlite3.Error as e:
+            print("An error occurred:", e.args[0])
+        buffer = ""
+
+con.close()
diff --git a/Doc/includes/sqlite3/connect_db_1.py b/Doc/includes/sqlite3/connect_db_1.py
new file mode 100644
index 0000000000..1b97523286
--- /dev/null
+++ b/Doc/includes/sqlite3/connect_db_1.py
@@ -0,0 +1,3 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
diff --git a/Doc/includes/sqlite3/connect_db_2.py b/Doc/includes/sqlite3/connect_db_2.py
new file mode 100644
index 0000000000..f9728b3613
--- /dev/null
+++ b/Doc/includes/sqlite3/connect_db_2.py
@@ -0,0 +1,3 @@
+import sqlite3
+
+con = sqlite3.connect(":memory:")
diff --git a/Doc/includes/sqlite3/converter_point.py b/Doc/includes/sqlite3/converter_point.py
new file mode 100644
index 0000000000..d0707abd2e
--- /dev/null
+++ b/Doc/includes/sqlite3/converter_point.py
@@ -0,0 +1,47 @@
+import sqlite3
+
+class Point(object):
+    def __init__(self, x, y):
+        self.x, self.y = x, y
+
+    def __repr__(self):
+        return "(%f;%f)" % (self.x, self.y)
+
+def adapt_point(point):
+    return "%f;%f" % (point.x, point.y)
+
+def convert_point(s):
+    x, y = list(map(float, s.split(";")))
+    return Point(x, y)
+
+# Register the adapter
+sqlite3.register_adapter(Point, adapt_point)
+
+# Register the converter
+sqlite3.register_converter("point", convert_point)
+
+p = Point(4.0, -3.2)
+
+#########################
+# 1) Using declared types
+con = sqlite3.connect(":memory:", detect_types=sqlite3.PARSE_DECLTYPES)
+cur = con.cursor()
+cur.execute("create table test(p point)")
+
+cur.execute("insert into test(p) values (?)", (p,))
+cur.execute("select p from test")
+print("with declared types:", cur.fetchone()[0])
+cur.close()
+con.close()
+
+#######################
+# 1) Using column names
+con = sqlite3.connect(":memory:", detect_types=sqlite3.PARSE_COLNAMES)
+cur = con.cursor()
+cur.execute("create table test(p)")
+
+cur.execute("insert into test(p) values (?)", (p,))
+cur.execute('select p as "p [point]" from test')
+print("with column names:", cur.fetchone()[0])
+cur.close()
+con.close()
diff --git a/Doc/includes/sqlite3/countcursors.py b/Doc/includes/sqlite3/countcursors.py
new file mode 100644
index 0000000000..ef3e70a2a9
--- /dev/null
+++ b/Doc/includes/sqlite3/countcursors.py
@@ -0,0 +1,15 @@
+import sqlite3
+
+class CountCursorsConnection(sqlite3.Connection):
+    def __init__(self, *args, **kwargs):
+        sqlite3.Connection.__init__(self, *args, **kwargs)
+        self.numcursors = 0
+
+    def cursor(self, *args, **kwargs):
+        self.numcursors += 1
+        return sqlite3.Connection.cursor(self, *args, **kwargs)
+
+con = sqlite3.connect(":memory:", factory=CountCursorsConnection)
+cur1 = con.cursor()
+cur2 = con.cursor()
+print(con.numcursors)
diff --git a/Doc/includes/sqlite3/createdb.py b/Doc/includes/sqlite3/createdb.py
new file mode 100644
index 0000000000..ee2950bdf8
--- /dev/null
+++ b/Doc/includes/sqlite3/createdb.py
@@ -0,0 +1,28 @@
+# Not referenced from the documentation, but builds the database file the other
+# code snippets expect.
+
+import sqlite3
+import os
+
+DB_FILE = "mydb"
+
+if os.path.exists(DB_FILE):
+    os.remove(DB_FILE)
+
+con = sqlite3.connect(DB_FILE)
+cur = con.cursor()
+cur.execute("""
+        create table people
+        (
+          name_last      varchar(20),
+          age            integer
+        )
+        """)
+
+cur.execute("insert into people (name_last, age) values ('Yeltsin',   72)")
+cur.execute("insert into people (name_last, age) values ('Putin',     51)")
+
+con.commit()
+
+cur.close()
+con.close()
diff --git a/Doc/includes/sqlite3/execsql_fetchonerow.py b/Doc/includes/sqlite3/execsql_fetchonerow.py
new file mode 100644
index 0000000000..078873bfc9
--- /dev/null
+++ b/Doc/includes/sqlite3/execsql_fetchonerow.py
@@ -0,0 +1,17 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
+
+cur = con.cursor()
+SELECT = "select name_last, age from people order by age, name_last"
+
+# 1. Iterate over the rows available from the cursor, unpacking the
+# resulting sequences to yield their elements (name_last, age):
+cur.execute(SELECT)
+for (name_last, age) in cur:
+    print('%s is %d years old.' % (name_last, age))
+
+# 2. Equivalently:
+cur.execute(SELECT)
+for row in cur:
+    print('%s is %d years old.' % (row[0], row[1]))
diff --git a/Doc/includes/sqlite3/execsql_printall_1.py b/Doc/includes/sqlite3/execsql_printall_1.py
new file mode 100644
index 0000000000..a4ce5c5281
--- /dev/null
+++ b/Doc/includes/sqlite3/execsql_printall_1.py
@@ -0,0 +1,13 @@
+import sqlite3
+
+# Create a connection to the database file "mydb":
+con = sqlite3.connect("mydb")
+
+# Get a Cursor object that operates in the context of Connection con:
+cur = con.cursor()
+
+# Execute the SELECT statement:
+cur.execute("select * from people order by age")
+
+# Retrieve all rows as a sequence and print that sequence:
+print(cur.fetchall())
diff --git a/Doc/includes/sqlite3/execute_1.py b/Doc/includes/sqlite3/execute_1.py
new file mode 100644
index 0000000000..3d08840b86
--- /dev/null
+++ b/Doc/includes/sqlite3/execute_1.py
@@ -0,0 +1,11 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
+
+cur = con.cursor()
+
+who = "Yeltsin"
+age = 72
+
+cur.execute("select name_last, age from people where name_last=? and age=?", (who, age))
+print(cur.fetchone())
diff --git a/Doc/includes/sqlite3/execute_2.py b/Doc/includes/sqlite3/execute_2.py
new file mode 100644
index 0000000000..84734f967f
--- /dev/null
+++ b/Doc/includes/sqlite3/execute_2.py
@@ -0,0 +1,12 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
+
+cur = con.cursor()
+
+who = "Yeltsin"
+age = 72
+
+cur.execute("select name_last, age from people where name_last=:who and age=:age",
+    {"who": who, "age": age})
+print(cur.fetchone())
diff --git a/Doc/includes/sqlite3/execute_3.py b/Doc/includes/sqlite3/execute_3.py
new file mode 100644
index 0000000000..0353683fc7
--- /dev/null
+++ b/Doc/includes/sqlite3/execute_3.py
@@ -0,0 +1,12 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
+
+cur = con.cursor()
+
+who = "Yeltsin"
+age = 72
+
+cur.execute("select name_last, age from people where name_last=:who and age=:age",
+    locals())
+print(cur.fetchone())
diff --git a/Doc/includes/sqlite3/executemany_1.py b/Doc/includes/sqlite3/executemany_1.py
new file mode 100644
index 0000000000..efae10637c
--- /dev/null
+++ b/Doc/includes/sqlite3/executemany_1.py
@@ -0,0 +1,24 @@
+import sqlite3
+
+class IterChars:
+    def __init__(self):
+        self.count = ord('a')
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self.count > ord('z'):
+            raise StopIteration
+        self.count += 1
+        return (chr(self.count - 1),) # this is a 1-tuple
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+cur.execute("create table characters(c)")
+
+theIter = IterChars()
+cur.executemany("insert into characters(c) values (?)", theIter)
+
+cur.execute("select c from characters")
+print(cur.fetchall())
diff --git a/Doc/includes/sqlite3/executemany_2.py b/Doc/includes/sqlite3/executemany_2.py
new file mode 100644
index 0000000000..518cd9430d
--- /dev/null
+++ b/Doc/includes/sqlite3/executemany_2.py
@@ -0,0 +1,15 @@
+import sqlite3
+
+def char_generator():
+    import string
+    for c in string.letters[:26]:
+        yield (c,)
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+cur.execute("create table characters(c)")
+
+cur.executemany("insert into characters(c) values (?)", char_generator())
+
+cur.execute("select c from characters")
+print(cur.fetchall())
diff --git a/Doc/includes/sqlite3/executescript.py b/Doc/includes/sqlite3/executescript.py
new file mode 100644
index 0000000000..7e5358178d
--- /dev/null
+++ b/Doc/includes/sqlite3/executescript.py
@@ -0,0 +1,24 @@
+import sqlite3
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+cur.executescript("""
+    create table person(
+        firstname,
+        lastname,
+        age
+    );
+
+    create table book(
+        title,
+        author,
+        published
+    );
+
+    insert into book(title, author, published)
+    values (
+        'Dirk Gently''s Holistic Detective Agency',
+        'Douglas Adams',
+        1987
+    );
+    """)
diff --git a/Doc/includes/sqlite3/insert_more_people.py b/Doc/includes/sqlite3/insert_more_people.py
new file mode 100644
index 0000000000..edbc79e7e5
--- /dev/null
+++ b/Doc/includes/sqlite3/insert_more_people.py
@@ -0,0 +1,16 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
+
+cur = con.cursor()
+
+newPeople = (
+    ('Lebed'       , 53),
+    ('Zhirinovsky' , 57),
+  )
+
+for person in newPeople:
+    cur.execute("insert into people (name_last, age) values (?, ?)", person)
+
+# The changes will not be saved unless the transaction is committed explicitly:
+con.commit()
diff --git a/Doc/includes/sqlite3/md5func.py b/Doc/includes/sqlite3/md5func.py
new file mode 100644
index 0000000000..b7bc05b379
--- /dev/null
+++ b/Doc/includes/sqlite3/md5func.py
@@ -0,0 +1,11 @@
+import sqlite3
+import hashlib
+
+def md5sum(t):
+    return hashlib.md5(t).hexdigest()
+
+con = sqlite3.connect(":memory:")
+con.create_function("md5", 1, md5sum)
+cur = con.cursor()
+cur.execute("select md5(?)", ("foo",))
+print(cur.fetchone()[0])
diff --git a/Doc/includes/sqlite3/mysumaggr.py b/Doc/includes/sqlite3/mysumaggr.py
new file mode 100644
index 0000000000..d2dfd2c0b9
--- /dev/null
+++ b/Doc/includes/sqlite3/mysumaggr.py
@@ -0,0 +1,20 @@
+import sqlite3
+
+class MySum:
+    def __init__(self):
+        self.count = 0
+
+    def step(self, value):
+        self.count += value
+
+    def finalize(self):
+        return self.count
+
+con = sqlite3.connect(":memory:")
+con.create_aggregate("mysum", 1, MySum)
+cur = con.cursor()
+cur.execute("create table test(i)")
+cur.execute("insert into test(i) values (1)")
+cur.execute("insert into test(i) values (2)")
+cur.execute("select mysum(i) from test")
+print(cur.fetchone()[0])
diff --git a/Doc/includes/sqlite3/parse_colnames.py b/Doc/includes/sqlite3/parse_colnames.py
new file mode 100644
index 0000000000..cc68c76459
--- /dev/null
+++ b/Doc/includes/sqlite3/parse_colnames.py
@@ -0,0 +1,8 @@
+import sqlite3
+import datetime
+
+con = sqlite3.connect(":memory:", detect_types=sqlite3.PARSE_COLNAMES)
+cur = con.cursor()
+cur.execute('select ? as "x [timestamp]"', (datetime.datetime.now(),))
+dt = cur.fetchone()[0]
+print(dt, type(dt))
diff --git a/Doc/includes/sqlite3/pysqlite_datetime.py b/Doc/includes/sqlite3/pysqlite_datetime.py
new file mode 100644
index 0000000000..68d49358a5
--- /dev/null
+++ b/Doc/includes/sqlite3/pysqlite_datetime.py
@@ -0,0 +1,20 @@
+import sqlite3
+import datetime
+
+con = sqlite3.connect(":memory:", detect_types=sqlite3.PARSE_DECLTYPES|sqlite3.PARSE_COLNAMES)
+cur = con.cursor()
+cur.execute("create table test(d date, ts timestamp)")
+
+today = datetime.date.today()
+now = datetime.datetime.now()
+
+cur.execute("insert into test(d, ts) values (?, ?)", (today, now))
+cur.execute("select d, ts from test")
+row = cur.fetchone()
+print(today, "=>", row[0], type(row[0]))
+print(now, "=>", row[1], type(row[1]))
+
+cur.execute('select current_date as "d [date]", current_timestamp as "ts [timestamp]"')
+row = cur.fetchone()
+print("current_date", row[0], type(row[0]))
+print("current_timestamp", row[1], type(row[1]))
diff --git a/Doc/includes/sqlite3/row_factory.py b/Doc/includes/sqlite3/row_factory.py
new file mode 100644
index 0000000000..e436ffc6c8
--- /dev/null
+++ b/Doc/includes/sqlite3/row_factory.py
@@ -0,0 +1,13 @@
+import sqlite3
+
+def dict_factory(cursor, row):
+    d = {}
+    for idx, col in enumerate(cursor.description):
+        d[col[0]] = row[idx]
+    return d
+
+con = sqlite3.connect(":memory:")
+con.row_factory = dict_factory
+cur = con.cursor()
+cur.execute("select 1 as a")
+print(cur.fetchone()["a"])
diff --git a/Doc/includes/sqlite3/rowclass.py b/Doc/includes/sqlite3/rowclass.py
new file mode 100644
index 0000000000..3fa0b87389
--- /dev/null
+++ b/Doc/includes/sqlite3/rowclass.py
@@ -0,0 +1,12 @@
+import sqlite3
+
+con = sqlite3.connect("mydb")
+con.row_factory = sqlite3.Row
+
+cur = con.cursor()
+cur.execute("select name_last, age from people")
+for row in cur:
+    assert row[0] == row["name_last"]
+    assert row["name_last"] == row["nAmE_lAsT"]
+    assert row[1] == row["age"]
+    assert row[1] == row["AgE"]
diff --git a/Doc/includes/sqlite3/shared_cache.py b/Doc/includes/sqlite3/shared_cache.py
new file mode 100644
index 0000000000..bf1d7b4a21
--- /dev/null
+++ b/Doc/includes/sqlite3/shared_cache.py
@@ -0,0 +1,6 @@
+import sqlite3
+
+# The shared cache is only available in SQLite versions 3.3.3 or later
+# See the SQLite documentaton for details.
+
+sqlite3.enable_shared_cache(True)
diff --git a/Doc/includes/sqlite3/shortcut_methods.py b/Doc/includes/sqlite3/shortcut_methods.py
new file mode 100644
index 0000000000..596d87c18e
--- /dev/null
+++ b/Doc/includes/sqlite3/shortcut_methods.py
@@ -0,0 +1,21 @@
+import sqlite3
+
+persons = [
+    ("Hugo", "Boss"),
+    ("Calvin", "Klein")
+    ]
+
+con = sqlite3.connect(":memory:")
+
+# Create the table
+con.execute("create table person(firstname, lastname)")
+
+# Fill the table
+con.executemany("insert into person(firstname, lastname) values (?, ?)", persons)
+
+# Print the table contents
+for row in con.execute("select firstname, lastname from person"):
+    print(row)
+
+# Using a dummy WHERE clause to not let SQLite take the shortcut table deletes.
+print("I just deleted", con.execute("delete from person where 1=1").rowcount, "rows")
diff --git a/Doc/includes/sqlite3/simple_tableprinter.py b/Doc/includes/sqlite3/simple_tableprinter.py
new file mode 100644
index 0000000000..231d8726cd
--- /dev/null
+++ b/Doc/includes/sqlite3/simple_tableprinter.py
@@ -0,0 +1,26 @@
+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)
+
+# Print a header.
+for fieldDesc in cur.description:
+    print(fieldDesc[0].ljust(FIELD_MAX_WIDTH), end=' ')
+print() # Finish the header with a newline.
+print('-' * 78)
+
+# For each row, print the value of each field left-justified within
+# the maximum possible width of that field.
+fieldIndices = range(len(cur.description))
+for row in cur:
+    for fieldIndex in fieldIndices:
+        fieldValue = str(row[fieldIndex])
+        print(fieldValue.ljust(FIELD_MAX_WIDTH), end=' ')
+
+    print() # Finish the row with a newline.
diff --git a/Doc/includes/sqlite3/text_factory.py b/Doc/includes/sqlite3/text_factory.py
new file mode 100644
index 0000000000..2dab8e453f
--- /dev/null
+++ b/Doc/includes/sqlite3/text_factory.py
@@ -0,0 +1,42 @@
+import sqlite3
+
+con = sqlite3.connect(":memory:")
+cur = con.cursor()
+
+# Create the table
+con.execute("create table person(lastname, firstname)")
+
+AUSTRIA = "\xd6sterreich"
+
+# by default, rows are returned as Unicode
+cur.execute("select ?", (AUSTRIA,))
+row = cur.fetchone()
+assert row[0] == AUSTRIA
+
+# but we can make pysqlite always return bytestrings ...
+con.text_factory = str
+cur.execute("select ?", (AUSTRIA,))
+row = cur.fetchone()
+assert type(row[0]) == str
+# the bytestrings will be encoded in UTF-8, unless you stored garbage in the
+# database ...
+assert row[0] == AUSTRIA.encode("utf-8")
+
+# we can also implement a custom text_factory ...
+# here we implement one that will ignore Unicode characters that cannot be
+# decoded from UTF-8
+con.text_factory = lambda x: str(x, "utf-8", "ignore")
+cur.execute("select ?", ("this is latin1 and would normally create errors" + "\xe4\xf6\xfc".encode("latin1"),))
+row = cur.fetchone()
+assert type(row[0]) == str
+
+# pysqlite offers a builtin optimized text_factory that will return bytestring
+# objects, if the data is in ASCII only, and otherwise return unicode objects
+con.text_factory = sqlite3.OptimizedUnicode
+cur.execute("select ?", (AUSTRIA,))
+row = cur.fetchone()
+assert type(row[0]) == str
+
+cur.execute("select ?", ("Germany",))
+row = cur.fetchone()
+assert type(row[0]) == str