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to_init_repr() inner dtypes missing pl. qualifier #15802

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jr200 opened this issue Apr 20, 2024 · 1 comment · Fixed by #16235
Closed
2 tasks done

to_init_repr() inner dtypes missing pl. qualifier #15802

jr200 opened this issue Apr 20, 2024 · 1 comment · Fixed by #16235
Labels
A-formatting Area: display/repr of Polars objects bug Something isn't working P-low Priority: low python Related to Python Polars

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@jr200
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jr200 commented Apr 20, 2024

Checks

  • I have checked that this issue has not already been reported.
  • I have confirmed this bug exists on the latest version of Polars.

Reproducible example

import os
os.environ["RUST_BACKTRACE"]="full"
os.environ["POLARS_VERBOSE"]="1"

import polars as pl

print(
    pl.DataFrame([
        pl.Series("E", [0], dtype=pl.Int8),
        pl.Series("A", [[1]], dtype=pl.Array(pl.Int16, 1)),
        pl.Series("S", [{"a": 2}], dtype=pl.Struct({"a": pl.Int32})),
        pl.Series("L", [[3]], dtype=pl.List(pl.Int64)),
    ])
    .to_init_repr()
)

Log output

pl.DataFrame(
    [
        pl.Series("E", [0], dtype=pl.Int8),
        pl.Series("A", [[1]], dtype=pl.Array(Int16, width=1)),
        pl.Series("S", [{'a': 2}], dtype=pl.Struct({'a': Int32})),
        pl.Series("L", [[3]], dtype=pl.List(Int64)),
    ]
)

Issue description

The inner dtypes are missing the pl. prefix.

Expected behavior

Expect the output to be:

pl.DataFrame(
    [
        pl.Series("E", [0], dtype=pl.Int8),
        pl.Series("A", [[1]], dtype=pl.Array(pl.Int16, width=1)),
        pl.Series("S", [{'a': 2}], dtype=pl.Struct({'a': pl.Int32})),
        pl.Series("L", [[3]], dtype=pl.List(pl.Int64)),
    ]
)

Installed versions

--------Version info---------
Polars:               0.20.21
Index type:           UInt32
Platform:             macOS-14.1.1-x86_64-i386-64bit
Python:               3.11.3 (main, Mar 12 2024, 20:00:56) [Clang 15.0.0 (clang-1500.3.9.4)]

----Optional dependencies----
adbc_driver_manager:  <not installed>
cloudpickle:          <not installed>
connectorx:           <not installed>
deltalake:            <not installed>
fastexcel:            <not installed>
fsspec:               <not installed>
gevent:               <not installed>
hvplot:               0.9.2
matplotlib:           <not installed>
nest_asyncio:         1.6.0
numpy:                1.26.4
openpyxl:             <not installed>
pandas:               2.2.1
pyarrow:              15.0.2
pydantic:             <not installed>
pyiceberg:            <not installed>
pyxlsb:               <not installed>
sqlalchemy:           <not installed>
xlsx2csv:             <not installed>
xlsxwriter:           <not installed>
@jr200 jr200 added bug Something isn't working needs triage Awaiting prioritization by a maintainer python Related to Python Polars labels Apr 20, 2024
@jr200 jr200 changed the title to_init_repr inner dtypes missing pl. qualifier to_init_repr() inner dtypes missing pl. qualifier Apr 20, 2024
@stinodego stinodego added A-formatting Area: display/repr of Polars objects P-low Priority: low and removed needs triage Awaiting prioritization by a maintainer labels Apr 21, 2024
@stinodego
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stinodego commented Apr 21, 2024 •
edited

Thanks for the report! A smaller repro:

import polars as pl

s = pl.Series([{"a": 2}])
print(s.to_init_repr())

As a temporary workaround, you can import all datatypes directly using from polars.datatypes import *. That will make sure your init_repr will work.

This was referenced May 14, 2024
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A-formatting Area: display/repr of Polars objects bug Something isn't working P-low Priority: low python Related to Python Polars
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fix(python): Include pl. qualifier for inner dtypes in to_init_repr datenzauberai/polars
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