To add an integer to a list in Python, you can use the <code>append()</code> method. Here is an example:
<pre><code class="lang-python"># Create a list of integers
numbers = [1, 2, 3]

# Add a new integer to the list
numbers.append(4)

# Print the updated list
print(numbers) # [1, 2, 3, 4]
</code></pre>
The <code>append()</code> method adds the new element to the end of the list. It takes the element to be added as its argument, and it modifies the list in-place. Therefore, you don't need to assign the result of the <code>append()</code> method to a variable, unless you want to save the modified list for later use.

To add an integer to a list in Python, you can use the `append()` method. Here is an example:

```python
# Create a list of integers
numbers = [1, 2, 3]

# Add a new integer to the list
numbers.append(4)

# Print the updated list
print(numbers)  # [1, 2, 3, 4]
```

The `append()` method adds the new element to the end of the list. It takes the element to be added as its argument, and it modifies the list in-place. Therefore, you don't need to assign the result of the `append()` method to a variable, unless you want to save the modified list for later use.

How to add an integer to a list in Python