'bool' object is not callable error

[simonw]

I'm getting this when latest is deployed to Cloud Run:

Traceback (most recent call last):
  File "/usr/local/bin/datasette", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/datasette/cli.py", line 406, in serve
    inspect_data = json.load(open(inspect_file))
TypeError: 'bool' object is not callable

I think I may have broken things in #970 - a980199

[simonw]

D'oh because I have a new variable called open.

[simonw]

Confirmed in local dev:

% datasette fixtures.db --inspect-file inspect.json
Traceback (most recent call last):
  File "/Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/bin/datasette", line 11, in <module>
    load_entry_point('datasette', 'console_scripts', 'datasette')()
  File "/Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/Users/simon/Dropbox/Development/datasette/datasette/cli.py", line 406, in serve
    inspect_data = json.load(open(inspect_file))
TypeError: 'bool' object is not callable