# Script stops working when imported to sage terminal ("plot" not defined)

**EDIT:** OK, so basically, the Sage command line is not recognizing *any* sage commands (sqrt, etc) when they are contained in an imported .sage file. It's as if when I import a file to Sage, it doesn't read it using the Sage library. Is there something I have to add to the header of a .sage file for it to be read properly?

**Old message:**

So everything works fine in the sage notebook, and even if I pretty much rewrite the same commands in the Sage terminal. So it can't be a problem with the script.

But when I copy, paste and save the whole script as a standalone `file.sage`

, and then try

```
run file.sage
```

... suddenly:

```
---> 30 multiPlot = plot(graphs, (x, 0, times[len(times)-1]+3), ymin=0)
31
32
NameError: name 'plot' is not defined
```

Why doesn't it read "plot" correctly and expect me to define it?