PrettyTable 3.1.0 regression on _stringify_row

[michal-jagiello-tmpl]

What did you do?

Trying to get string of my PrettyTable instance

What did you expect to happen?

Get the string

What actually happened?

Traceback (most recent call last):
  File "/home/ubuntu/onap/repos/xtesting-onap/doc/generate_status.py", line 428, in <module>
    write_file.write(str(dashboard_table))
  File "/home/ubuntu/onap/repos/xtesting-onap/.virtualenv/lib/python3.10/site-packages/prettytable/prettytable.py", line 319, in __str__
    return self.get_string()
  File "/home/ubuntu/onap/repos/xtesting-onap/.virtualenv/lib/python3.10/site-packages/prettytable/prettytable.py", line 1687, in get_string
    lines.append(self._stringify_row(row, options, self._hrule))
  File "/home/ubuntu/onap/repos/xtesting-onap/.virtualenv/lib/python3.10/site-packages/prettytable/prettytable.py", line 1833, in _stringify_row
    if line == "None" and self.none_format[field] is not None:
KeyError: 'Status'

For the version 3.0.0 works fine

What versions are you using?

• OS: Ubuntu
• Python: 3.10
• PrettyTable: 3.1.0

Please include code that reproduces the issue.

LOGGER.info(dashboard_table)

and

write_file.write(str(dashboard_table))

The best reproductions are self-contained scripts with minimal dependencies.

from prettytable import PrettyTable
t = PrettyTable()
t.add_row(["value 1", "None", "value 2"])
assert (
            t.get_string().strip()
            == """
+---------+---------+---------+
| Field 1 | Field 2 | Field 3 |
+---------+---------+---------+
| value 1 |   None  | value 2 |
+---------+---------+---------+
""".strip()
)

[michal-jagiello-tmpl]

That happens when

line == "None"

and I think there is missing test for that

[michal-jagiello-tmpl]

I did a workaround by set

my_awesome_prettytable.none_format["Status"] = "None"

[xuyixin1996]

I encounter the same issue and I revert to use 3.0.0 the fix looks good

[hugovk]

Thanks both, released in 3.1.1.