LGTM.com - false positive - unused import + eval

[jkseppan]

Description of the false positive

The import is not unused. If I delete it, I get the error

Traceback (most recent call last):
  File "examples/bootstrap.py", line 53, in <module>
    app.layout = html.Div([navbar.run(), body.run()])
  File "/Users/jks/code/htexpr/htexpr/htexpr.py", line 88, in run
    return eval(self.code, {**frame.f_globals, **frame.f_locals, **bindings})
  File "<unknown>", line 1, in <module>
NameError: name 'dcc' is not defined

The point of this liibrary is that it compiles strings into Python code objects, which are then evaluated. This is probably difficult to analyze statically without executing the code, so I wouldn't assign a high priority to this, but since the page asked me to report false positives, here goes.

URL to the alert on the project page on LGTM.com

https://lgtm.com/projects/g/jkseppan/htexpr/snapshot/4e3172505e73dfbb54169f9906460b17b5a10260/files/examples/bootstrap.py?sort=name&dir=ASC&mode=heatmap#x64fc00e52918b221:1