<h2 id="heading-what-is-variable">what is Variable</h2>
<p>symbol represent some number or String that may change.</p>
<h2 id="heading-data-types">data types</h2>
<p>scalar and non-scalar
both object</p>
<h3 id="heading-scalar">scalar</h3>
<ul>
<li>int : integer</li>
<li>float : real number</li>
<li>bool : True or False</li>
<li>none : Null</li>
</ul>
<h3 id="heading-non-scalar">non-scalar</h3>
<ul>
<li>String : data values that are made up of ordered sequences of characters, such as "hello world"</li>
</ul>
<h2 id="heading-how-to-check-data-type">How to check data type</h2>
<pre><code class="lang-python">print(type(Variable))
</code></pre>
<h2 id="heading-addtional-infomation">addtional infomation</h2>
<h3 id="heading-case-sensitive">Case-Sensitive</h3>
<p>a and A are different variable</p>
<h3 id="heading-casting">Casting</h3>
<pre><code class="lang-Python">x = str(<span class="hljs-number">4</span>)    <span class="hljs-comment"># "4"</span>
y = int(<span class="hljs-number">4</span>)    <span class="hljs-comment"># 4</span>
z = float(<span class="hljs-number">4</span>) <span class="hljs-comment"># 4.0</span>
</code></pre>


## what is Variable
symbol represent some number or String that may change.

## data types
scalar and non-scalar
both object

### scalar
- int : integer
- float : real number
- bool : True or False
- none : Null

### non-scalar 
- String : data values that are made up of ordered sequences of characters, such as "hello world"

## How to check data type
```python
print(type(Variable))
```

## addtional infomation

### Case-Sensitive
a and A are different variable

### Casting
```Python
x = str(4)    # "4"
y = int(4)    # 4
z = float(4) # 4.0
```

what is Python Variables

what is Variable

data types

scalar

non-scalar

How to check data type

addtional infomation

Case-Sensitive

Casting

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