<|im_start|>user
How can I create a bar chart in Python using Matplotlib?<|im_end|>
<|im_start|>assistant
```python
import matplotlib.pyplot as plt<|im_end|>

<|im_start|>user
How can I create a bar chart in Python using Matplotlib?<|im_end|>
<|im_start|>assistant
```python
import matplotlib.pyplot as plt
import numpy as np<|im_end|>

How can I create a bar chart in Python using Matplotlib?