* csv: apply dialect escapechar when reading
ReaderBuilder only received escapechar when it was passed directly as a
keyword argument. A dialect object's or registered dialect's escapechar was
visible through reader.dialect but not used by csv_core.
Pass escapechar through for named, object, and default dialect paths. This
makes escaped delimiters inside quoted fields follow the configured dialect,
for example '"abc\,def"' reads as 'abc,def'.
Unmark TestQuotedEscapedExcel.test_read_escape_fieldsep.
Assisted-by: Codex
* csv: handle escaped delimiters with QUOTE_NONE
csv_core applies escapechar while reading quoted fields, but its unquoted
field state treats an escaped delimiter as a delimiter. Consequently,
QUOTE_NONE with escapechar split 'abc\,def' into 'abc\' and 'def'.
Add a small QUOTE_NONE record parser for dialects with escapechar. It keeps
the byte following an escape character as field data, so escaped delimiters
do not end a field while ordinary delimiters and record terminators retain
their usual meaning.
Unmark TestEscapedExcel.test_read_escape_fieldsep.
Assisted-by: Codex
* csv: respect skipinitialspace with QUOTE_NONE
The QUOTE_NONE parser returned before the normal reader's whitespace
preprocessing, so it ignored skipinitialspace when escapechar was set.
Track whether parsing has just followed a delimiter and skip only ordinary
spaces in that position. Escaped spaces remain field data.
Add a stdlib_csv snippet regression test for QUOTE_NONE with escapechar and
skipinitialspace.
Assisted-by: Codex:gpt-5.6-terra
* csv: deduplicate reader dialect configuration
to_reader configured ReaderBuilder separately for named, object, and default
dialects even though the configuration was identical.
Resolve the PyDialect once, then apply delimiter, double_quote, escapechar,
and quotechar in one place. Preserve the existing unregistered-name fallback
and required excel dialect lookup behavior.
Assisted-by: Codex:gpt-5.6-terra
This directory contains all of the Python files that make up the standard
library for RustPython.
Most of these files are copied over from the CPython repository (the 3.7
branch), with slight modifications to allow them to work under RustPython. The
current goal is to complete the standard library with as few modifications as
possible. Current modifications are just temporary workarounds for bugs/missing
feature within the RustPython implementation.
The first big module we are targeting is unittest, so we can leverage the
CPython test suite.
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