Validate all values for csv.QUOTE

4,5 added in python/cpython/67230
ref: https://docs.python.org/3/library/csv.html#csv.QUOTE_NOTNULL
ref: https://github.com/python/cpython/blob/a8bc03696c7c2c03e1d580633151ec7b850366f3/Modules/_csv.c#L88-L106

Author: refack

pandas-stubs/_typing.pyi

@@ -738,7 +738,7 @@ JsonSeriesOrient: TypeAlias = Literal["split", "records", "index", "table"]
 TimestampConvention: TypeAlias = Literal["start", "end", "s", "e"]
 
 CSVEngine: TypeAlias = Literal["c", "python", "pyarrow", "python-fwf"]
-CSVQuoting: TypeAlias = Literal[0, 1, 2, 3]
+CSVQuoting: TypeAlias = Literal[0, 1, 2, 3, 4, 5]
 
 HDFCompLib: TypeAlias = Literal["zlib", "lzo", "bzip2", "blosc"]
 ParquetEngine: TypeAlias = Literal["auto", "pyarrow", "fastparquet"]

tests/test_frame.py

@@ -172,6 +172,9 @@ def test_types_to_csv() -> None:
     # Testing support for binary file handles, added in 1.2.0 https://pandas.pydata.org/docs/whatsnew/v1.2.0.html
     df.to_csv(io.BytesIO(), quoting=csv.QUOTE_ALL, encoding="utf-8", compression="gzip")
 
+    with ensure_clean() as path:
+        df.to_csv(path, quoting=csv.QUOTE_STRINGS)
+
 
 def test_types_to_csv_when_path_passed() -> None:
     df = pd.DataFrame(data={"col1": [1, 2], "col2": [3, 4]})