We already filter out a line will only None values, and sometimes
Excel of LibreOffice mistakes the real number of columns adding
one or more that have no value at all.
Eg. before this commit, this table would result in Date columns:
| A | B |
| ----- | -- |
| FALSE | 0 |
For now, even FALSE is parsed as Numeric (not sure why we don't have
a BooleanConverter).
Summary:
Python 2 only needs to be supported for the sake of old documents and formulas. This doesn't apply to the separate sandboxes that parse files for imports. Using Python 3 only allows using newer libraries and library versions. In particular, the latest version of openpyxl doesn't support Python 2. This will also make it easier to make other similar changes in the future, such as replacing messytables with a modern library. See https://grist.slack.com/archives/C0234CPPXPA/p1661261829343999?thread_ts=1661260442.837959&cid=C0234CPPXPA
The latest openpyxl is better at handling a particular edge case with broken dates in Excel, but still doesn't quite do what we want, so we monkeypatch it. Discussion: https://grist.slack.com/archives/C02EGJ1FUCV/p1661440851911869?thread_ts=1661154219.515549&cid=C02EGJ1FUCV
Setting `preferredPythonVersion` to '3' in SafePythonComponent ensures that JS always creates import sandboxes that use Python 3. Within Python, a module used by all imports will raise an error in Python 2. Python unit tests of imports are now only run in Python 3, using the `load_tests` protocol of `unittest`.
Test Plan: Mostly existing tests. Added another strange date to the Excel fixture.
Reviewers: dsagal
Reviewed By: dsagal
Subscribers: dsagal
Differential Revision: https://phab.getgrist.com/D3606
Summary:
This addresses a rare bug where xls files with invalid dimensions
could not be imported into Grist due to how openpyxl handles
parsing them.
Test Plan: Server test.
Reviewers: alexmojaki
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D3485
Summary:
openpyxl was producing tuples while some older code expects lists. Choosing to convert the tuples to lists (instead of making the other code work with tuples) in case there's other similar issues still out there. Should fix the error mentioned in https://grist.slack.com/archives/C0234CPPXPA/p1652797247167719:
```
Traceback (most recent call last):
File "/gristroot/grist/sandbox/grist/sandbox.py", line 103, in run
ret = self._functions[fname](*args)
File "/gristroot/grist/sandbox/grist/imports/register.py", line 11, in parse_excel
return import_file(file_source)
File "/gristroot/grist/sandbox/grist/imports/import_xls.py", line 20, in import_file
parse_options, tables = parse_file(path)
File "/gristroot/grist/sandbox/grist/imports/import_xls.py", line 26, in parse_file
return parse_open_file(f)
File "/gristroot/grist/sandbox/grist/imports/import_xls.py", line 69, in parse_open_file
table_data_with_types = parse_data.get_table_data(rows, len(headers))
File "/gristroot/grist/sandbox/grist/parse_data.py", line 215, in get_table_data
row.extend([""] * missing_values)
AttributeError: 'tuple' object has no attribute 'extend'
```
Test Plan: Existing tests. Haven't figured out how to reproduce the original error.
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D3434
Summary:
Use openpyxl instead of messytables (which used xlrd internally) in import_xls.py.
Skip empty rows since excel files can easily contain huge numbers of them.
Drop support for xls files (which openpyxl doesn't support) in favour of the newer xlsx format.
Fix some details relating to python virtualenvs and dependencies, as Jenkins was failing to find new Python dependencies.
Test Plan: Mostly relying on existing tests. Updated various tests which referred to xls files instead of xlsx. Added a Python test for skipping empty rows.
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D3406
Summary:
- Previously showed "UnboundLocalError". Now will show:
Import failed: Failed to parse Excel file.
Error: No tables found (1 empty tables skipped)
- Also fix logging for import code
Test Plan: Added a test case
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D3396
Summary:
JSON import logic was creating columns of type Int when JSON contained integral
values. This causes errors with large errors (e.g. millisecond timestamps), and
Numeric is generally the more convenient and common default.
Test Plan: TBD
Reviewers: jarek, alexmojaki
Reviewed By: jarek, alexmojaki
Subscribers: jarek, alexmojaki
Differential Revision: https://phab.getgrist.com/D3339
Summary:
- Removed string parsing and some type guessing code from parse_data.py. That logic is now implicitly done by ValueGuesser by leaving the initial column type as Any. parse_data.py mostly comes into play when importing files (e.g. Excel) containing values that already have types, i.e. numbers and dates.
- 0s and 1s are treated as numbers instead of booleans to keep imports lossless.
- Removed dateguess.py and test_dateguess.py.
- Changed what `guessDateFormat` does when multiple date formats work equally well for the given data, in order to be consistent with the old dateguess.py.
- Columns containing numbers are now always imported as Numeric, never Int.
- Removed `NullIfEmptyParser` because it was interfering with the new system. Its purpose was to avoid pointlessly changing a column from Any to Text when no actual data was inserted. A different solution to that problem was already added to `_ensure_column_accepts_data` in the data engine in a recent related diff.
Test Plan:
- Added 2 `nbrowser/Importer2` tests.
- Updated various existing tests.
- Extended testing of `guessDateFormat`. Added `guessDateFormats` to show how ambiguous dates are handled internally.
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D3302
Summary:
Python isdigit() returns true for unicode characters such as "²", which fail
when used as an argument to int().
Instead, be explicit about only considering characters 0-9 to be digits.
Test Plan: Added a test case which produces an error without this change.
Reviewers: alexmojaki
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D3027
Summary:
Our date-guessing logic analyzes text in full looking for date parts.
This diff skip all that work when text is so long that we don't need to
consider it to be a valid date.
This is a quick fix. There are probably many other cases when we don't
need to try hard to parse arbitrary text as dates.
Test Plan: Added a fixture and test case that would trigger the error without the fix.
Reviewers: paulfitz
Subscribers: paulfitz
Differential Revision: https://phab.getgrist.com/D2992
Summary:
Move all the plugins python code into the main folder with the core code.
Register file importing functions in the same main.py entrypoint as the data engine.
Remove options relating to different entrypoints and code directories. The only remaining plugin-specific option in NSandbox is the import directory/mount, i.e. where files to be parsed are placed.
Test Plan: this
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: dsagal
Differential Revision: https://phab.getgrist.com/D2965
Summary: Changes that move towards python 3 compatibility that are easy to review without much thought
Test Plan: The tests
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2873
Summary:
this moves sandbox/grist to core, and adds a requirements.txt
file for reconstructing the content of sandbox/thirdparty.
Test Plan:
existing tests pass.
Tested core functionality manually. Tested docker build manually.
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2563
