Parse variable length delimited lines
Project description
xlineparse
Python library to parse variable length delimited lines.
Usage
pip install xlineparse
import datetime as dt
from decimal import Decimal
from typing import Annotated, Literal
import xlineparse as xlp
AsdLine = tuple[
Literal["asd"],
int,
Decimal,
Decimal | None,
Annotated[bool, xlp.BoolField(true_value="Y", false_value="F")],
Annotated[dt.date, xlp.DateField(format="%Y-%m-%d")],
Annotated[dt.time, xlp.TimeField(format="%H%M%s")],
]
QweLine = tuple[
Literal["qwe"],
int,
]
schema = xlp.Schema(
delimiter="|",
quote=None,
trailing_delimiter=False,
lines=AsdLine | QweLine,
)
schema.parse_line("asd|1|3.14||Y|2012-01-02|123200")
# Will return:
(
"asd",
1,
Decimal("3.14"),
None,
True,
dt.date(2012, 1, 2),
dt.time(12, 32, 0),
)
TODO:
- Implement trailing delimiter.
- Implement Enum.
- Implement constraints: StrField.min_length StrField.max_length StrField.invalid_characters IntField.min_value: int | None = None IntField.max_value: int | None = None FloatField.min_value: float | None = None FloatField.max_value: float | None = None DecimalField.max_decimal_places: int | None = None DecimalField.min_value: decimal.Decimal | None = None DecimalField.max_value: decimal.Decimal | None = None
- Implement different quote characters.
- Allow delimiters to be escaped.
- Refactor some of the
is_none()
s with a bit o' ChatGPT.
Install/Develop
uv pip install -e '.[dev]'
maturin develop
Make release
- Add pypi token and user =
__token__
to settings (do this once). - Upversion
pyproject.toml
.
git tag -a v0.0.x head -m v0.0.x
git push origin v0.0.x
Project details
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