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‎README.md

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------
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**A server-less database engine that stores each database into a separate file.**
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### Connect
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**Opens a connection to the database file. Creates a new file if path doesn't exist.**
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```python
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import sqlite3
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<conn> = sqlite3.connect(<path>) # Also ':memory:'.
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<conn> = sqlite3.connect(<path>) # Opens existing or new file. Also ':memory:'.
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<conn>.close() # Closes the connection.
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```
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### Read
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**Returned values can be of type str, int, float, bytes or None.**
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```python
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<cursor> = <conn>.execute('<query>') # Can raise a subclass of sqlite3.Error.
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<tuple> = <cursor>.fetchone() # Returns next row. Also next(<cursor>).
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```
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### Placeholders
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* **Passed values can be of type str, int, float, bytes, None, bool, datetime.date or datetime.datetime.**
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* **Bools will be stored and returned as ints and dates as [ISO formatted strings](#encode).**
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```python
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<conn>.execute('<query>', <list/tuple>) # Replaces '?'s in query with values.
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<conn>.execute('<query>', <dict/namedtuple>) # Replaces ':<key>'s with values.
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<conn>.executemany('<query>', <coll_of_above>) # Runs execute() multiple times.
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```
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* **Passed values can be of type str, int, float, bytes, None, bool, datetime.date or datetime.datetime.**
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* **Bools will be stored and returned as ints and dates as [ISO formatted strings](#encode).**
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### Example
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**Values are not actually saved in this example because `'conn.commit()'` is omitted!**

‎index.html

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<body>
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<header>
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<aside>September 16, 2022</aside>
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<aside>September 19, 2022</aside>
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<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
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</header>
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writer.writerows(rows)
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</code></pre></div>
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<div><h2 id="sqlite"><a href="#sqlite" name="sqlite">#</a>SQLite</h2><p><strong>A server-less database engine that stores each database into a separate file.</strong></p><div><h3 id="connect">Connect</h3><p><strong>Opens a connection to the database file. Creates a new file if path doesn't exist.</strong></p><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> sqlite3
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&lt;conn&gt; = sqlite3.connect(&lt;path&gt;) <span class="hljs-comment"># Also ':memory:'.</span>
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<div><h2 id="sqlite"><a href="#sqlite" name="sqlite">#</a>SQLite</h2><p><strong>A server-less database engine that stores each database into a separate file.</strong></p><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> sqlite3
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&lt;conn&gt; = sqlite3.connect(&lt;path&gt;) <span class="hljs-comment"># Opens existing or new file. Also ':memory:'.</span>
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&lt;conn&gt;.close() <span class="hljs-comment"># Closes the connection.</span>
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</code></pre></div></div>
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</code></pre></div>
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<div><h3 id="read-1">Read</h3><p><strong>Returned values can be of type str, int, float, bytes or None.</strong></p><pre><code class="python language-python hljs">&lt;cursor&gt; = &lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># Can raise a subclass of sqlite3.Error.</span>
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<div><h3 id="read-1">Read</h3><pre><code class="python language-python hljs">&lt;cursor&gt; = &lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># Can raise a subclass of sqlite3.Error.</span>
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&lt;tuple&gt; = &lt;cursor&gt;.fetchone() <span class="hljs-comment"># Returns next row. Also next(&lt;cursor&gt;).</span>
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&lt;list&gt; = &lt;cursor&gt;.fetchall() <span class="hljs-comment"># Returns remaining rows. Also list(&lt;cursor&gt;).</span>
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</code></pre></div>
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<div><h3 id="write-1">Write</h3><pre><code class="python language-python hljs">&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># Can raise a subclass of sqlite3.Error.</span>
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&lt;conn&gt;.commit() <span class="hljs-comment"># Saves all changes since the last commit.</span>
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&lt;conn&gt;.rollback() <span class="hljs-comment"># Discards all changes since the last commit.</span>
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&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># depending on whether any exception occurred.</span>
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</code></pre></div>
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<div><h3 id="placeholders">Placeholders</h3><ul>
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<li><strong>Passed values can be of type str, int, float, bytes, None, bool, datetime.date or datetime.datetime.</strong></li>
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<li><strong>Bools will be stored and returned as ints and dates as <a href="#encode">ISO formatted strings</a>.</strong></li>
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</ul><pre><code class="python language-python hljs">&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;list/tuple&gt;) <span class="hljs-comment"># Replaces '?'s in query with values.</span>
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<div><h3 id="placeholders">Placeholders</h3><pre><code class="python language-python hljs">&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;list/tuple&gt;) <span class="hljs-comment"># Replaces '?'s in query with values.</span>
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&lt;conn&gt;.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;dict/namedtuple&gt;) <span class="hljs-comment"># Replaces ':&lt;key&gt;'s with values.</span>
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&lt;conn&gt;.executemany(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;coll_of_above&gt;) <span class="hljs-comment"># Runs execute() multiple times.</span>
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</code></pre></div>
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<ul>
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<li><strong>Passed values can be of type str, int, float, bytes, None, bool, datetime.date or datetime.datetime.</strong></li>
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<li><strong>Bools will be stored and returned as ints and dates as <a href="#encode">ISO formatted strings</a>.</strong></li>
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</ul>
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<div><h3 id="example">Example</h3><p><strong>Values are not actually saved in this example because <code class="python hljs"><span class="hljs-string">'conn.commit()'</span></code> is omitted!</strong></p><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>conn = sqlite3.connect(<span class="hljs-string">'test.db'</span>)
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<span class="hljs-meta">&gt;&gt;&gt; </span>conn.execute(<span class="hljs-string">'CREATE TABLE person (person_id INTEGER PRIMARY KEY, name, height)'</span>)
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<span class="hljs-meta">&gt;&gt;&gt; </span>conn.execute(<span class="hljs-string">'INSERT INTO person VALUES (NULL, ?, ?)'</span>, (<span class="hljs-string">'Jean-Luc'</span>, <span class="hljs-number">187</span>)).lastrowid
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<footer>
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<aside>September 16, 2022</aside>
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<aside>September 19, 2022</aside>
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<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
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</footer>
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