I have two lists, dates and values. I want to plot them using matplotlib. The following creates a scatter plot of my data.

```
import matplotlib.pyplot as plt
plt.scatter(dates,values)
plt.show()
```

`plt.plot(dates, values)`

creates a line graph.

But what I really want is a scatterplot where the points are connected by a line.

Similar to in R:

```
plot(dates, values)
lines(dates, value, type="l")
```

, which gives me a scatterplot of points overlaid with a line connecting the points.

How do I do this in python?