As an aside, it works properly written in python using apsw. It does not work
when using Pythons sqlite3 wrapper (but then, since that wrapper "buggers
about" with no way to tell what it is doing, I find that unsurprising).
Works fine for me anyway. What I wrote for an equivalent is below.
import contextlib
import os
import sqlite3
import sys
print("Python version: {0}".format(sys.version))
print("SQLite3 module version: {0}".format(sqlite3.version))
print("SQLite3 DLL version: {0}\n".format(sqlite3.sqlite_version))
createSQL = """CREATE TABLE MyTable(
component TEXT not null,
key TEXT not null,
value INTEGER not null,
primary key (component, key)
);"""
dropSQL = "DROP TABLE MyTable;"
dbFi = r"D:\Temp\DeleteMe.sqlite"
if os.path.isfile(dbFi):
os.remove(dbFi)
with contextlib.closing(sqlite3.connect(dbFi, isolation_level = None)) as
conn1, \
contextlib.closing(sqlite3.connect(dbFi, isolation_level = None)) as conn2:
with contextlib.closing(conn1.cursor()) as cur1, \
contextlib.closing(conn2.cursor()) as cur2:
for roundNo in range(2):
print(f"Round: {roundNo:,d}")
print("Create on conn1")
try:
cur1.execute(createSQL)
except sqlite3.Error as err:
print("ERROR: {0!s}".format(err))
print("Delete on conn2")
try:
cur2.execute(dropSQL)
except sqlite3.Error as err:
print("ERROR: {0!s}".format(err))
print()
print("Executing an extra drop on conn2. This should fail")
try:
cur2.execute(dropSQL)
except sqlite3.Error as err:
print("ERROR: {0!s}".format(err))
if os.path.isfile(dbFi):
os.remove(dbFi)
print("\nDone.")
Running that gives me:
Python version: 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:57:15) [MSC v.1915 64
bit (AMD64)]
SQLite3 module version: 2.6.0
SQLite3 DLL version: 3.25.3
Round: 0
Create on conn1
Delete on conn2
Round: 1
Create on conn1
Delete on conn2
Executing an extra drop on conn2. This should fail
ERROR: no such table: MyTable
Done.
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