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‎README.md

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Input
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-----
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* **Reads a line from user input or pipe if present.**
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* **Trailing newline gets stripped.**
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* **Prompt string is printed to the standard output before reading input.**
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* **Raises EOFError when user hits EOF or input stream gets exhausted.**
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**Reads a line from user input or pipe if present.**
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```python
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<str> = input(prompt=None)
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```
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* **Trailing newline gets stripped.**
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* **Prompt string is printed to the standard output before reading input.**
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* **Raises EOFError when user hits EOF or input stream gets exhausted.**
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Command Line Arguments
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SQLite
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------
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**Server-less database engine that stores each database into separate file.**
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### Connect
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```python
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import sqlite3
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db = sqlite3.connect('<path>') # Also ':memory:'.
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* **New database will be created if path doesn't exist.**
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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> = db.execute('<query>') # Can raise sqlite3.OperationalError.
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<tuple> = <cursor>.fetchone() # Returns next row. Also next(<cursor>).
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<list> = <cursor>.fetchall() # Returns remaining rows.
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```
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* **Returned values can be of type str, int, float, bytes or None.**
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### Write
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```python
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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.datetme.**
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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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db.execute('<query>', <list/tuple>) # Replaces '?'s in query with values.
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db.execute('<query>', <dict/namedtuple>) # Replaces ':<key>'s with values.
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db.executemany('<query>', <coll_of_above>) # Runs execute() many 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.datetme.**
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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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**In this example values are not actually saved because `'db.commit()'` is omitted!**
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```python
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>>> db = sqlite3.connect('test.db')
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>>> db.execute('create table t (a, b, c)')
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>>> db.execute('insert into t values (1, 2, 3)')
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>>> db.execute('select * from t').fetchall()
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[(1, 2, 3)]
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```
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* **In this example values are not actually saved because `'db.commit()'` was omitted.**
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```
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### MySQL
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**Has a very similar interface, with differences listed below.**

‎index.html

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<ul>
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<li><strong>Levels deeper than 'depth' get replaced by '…'.</strong></li>
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</ul>
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<div><h2 id="input"><a href="#input" name="input">#</a>Input</h2><ul>
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<li><strong>Reads a line from user input or pipe if present.</strong></li>
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<li><strong>Trailing newline gets stripped.</strong></li>
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<li><strong>Prompt string is printed to the standard output before reading input.</strong></li>
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<li><strong>Raises EOFError when user hits EOF or input stream gets exhausted.</strong></li>
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</ul><pre><code class="python language-python hljs">&lt;str&gt; = input(prompt=<span class="hljs-keyword">None</span>)
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<div><h2 id="input"><a href="#input" name="input">#</a>Input</h2><p><strong>Reads a line from user input or pipe if present.</strong></p><pre><code class="python language-python hljs">&lt;str&gt; = input(prompt=<span class="hljs-keyword">None</span>)
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</code></pre></div>
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<ul>
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<li><strong>Trailing newline gets stripped.</strong></li>
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<li><strong>Prompt string is printed to the standard output before reading input.</strong></li>
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<li><strong>Raises EOFError when user hits EOF or input stream gets exhausted.</strong></li>
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</ul>
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<div><h2 id="commandlinearguments"><a href="#commandlinearguments" name="commandlinearguments">#</a>Command Line Arguments</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> sys
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script_name = sys.argv[<span class="hljs-number">0</span>]
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arguments = sys.argv[<span class="hljs-number">1</span>:]
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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>Server-less database engine that stores each database into separate file.</strong></p><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> sqlite3
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<div><h2 id="sqlite"><a href="#sqlite" name="sqlite">#</a>SQLite</h2><p><strong>Server-less database engine that stores each database into separate file.</strong></p><div><h3 id="connect">Connect</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> sqlite3
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db = sqlite3.connect(<span class="hljs-string">'&lt;path&gt;'</span>) <span class="hljs-comment"># Also ':memory:'.</span>
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...
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db.close()
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</code></pre></div>
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</code></pre></div></div>
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<ul>
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<li><strong>New database will be created if path doesn't exist.</strong></li>
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</ul>
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<div><h3 id="read-1">Read</h3><pre><code class="python language-python hljs">&lt;cursor&gt; = db.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># Can raise sqlite3.OperationalError.</span>
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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; = db.execute(<span class="hljs-string">'&lt;query&gt;'</span>) <span class="hljs-comment"># Can raise sqlite3.OperationalError.</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.</span>
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</code></pre></div>
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<ul>
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<li><strong>Returned values can be of type str, int, float, bytes or None.</strong></li>
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</ul>
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<div><h3 id="write-1">Write</h3><pre><code class="python language-python hljs">db.execute(<span class="hljs-string">'&lt;query&gt;'</span>)
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db.commit()
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</code></pre></div>
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db.execute(<span class="hljs-string">'&lt;query&gt;'</span>)
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</code></pre></div>
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<div><h3 id="placeholders">Placeholders</h3><pre><code class="python language-python hljs">db.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><ul>
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<li><strong>Passed values can be of type str, int, float, bytes, None, bool, datetime.date or datetime.datetme.</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">db.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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db.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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db.executemany(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;coll_of_above&gt;) <span class="hljs-comment"># Runs execute() many 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.datetme.</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><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>db = sqlite3.connect(<span class="hljs-string">'test.db'</span>)
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<div><h3 id="example">Example</h3><p><strong>In this example values are not actually saved because <code class="python hljs"><span class="hljs-string">'db.commit()'</span></code> is omitted!</strong></p><pre><code class="python language-python hljs"><span class="hljs-meta">&gt;&gt;&gt; </span>db = sqlite3.connect(<span class="hljs-string">'test.db'</span>)
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<span class="hljs-meta">&gt;&gt;&gt; </span>db.execute(<span class="hljs-string">'create table t (a, b, c)'</span>)
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<span class="hljs-meta">&gt;&gt;&gt; </span>db.execute(<span class="hljs-string">'insert into t values (1, 2, 3)'</span>)
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<span class="hljs-meta">&gt;&gt;&gt; </span>db.execute(<span class="hljs-string">'select * from t'</span>).fetchall()
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[(<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>)]
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</code></pre></div>
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<ul>
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<li><strong>In this example values are not actually saved because <code class="python hljs"><span class="hljs-string">'db.commit()'</span></code> was omitted.</strong> </li>
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</ul>
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<div><h3 id="mysql">MySQL</h3><p><strong>Has a very similar interface, with differences listed below.</strong></p><pre><code class="python language-python hljs"><span class="hljs-comment"># $ pip3 install mysql-connector</span>
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<span class="hljs-keyword">from</span> mysql <span class="hljs-keyword">import</span> connector
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db = connector.connect(host=&lt;str&gt;, user=&lt;str&gt;, password=&lt;str&gt;, database=&lt;str&gt;)

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