# tick formatter pi cause the plot of squared sine function to have long tick label

sage: plot(sin(x)^2)

This is normal. but if you use the below code:

```
sage: plot(sin(x)^2, tick_formatter=pi)
```

You will get very long y axis tick labels.

The version of sagemath is 9.6-2, from arch linux package repository.

**edit**: tick_formatter=[pi, None] will give the normal result, but according to the documentation of `Graphics objects`

, about tick_formatter:

If the value of this keyword is a single item, then this will give the formatting for the horizontal axis only (except for the "latex" option).

So my code should work, but it did not work.

the version of sagemath is 9.6-2, from archlinux package repository