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DataFrame.assign() should allow a list and a range #1248

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Dr-Irv opened this issue Jun 13, 2025 · 0 comments · Fixed by #1250
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DataFrame.assign() should allow a list and a range #1248

Dr-Irv opened this issue Jun 13, 2025 · 0 comments · Fixed by #1250
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@Dr-Irv
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Dr-Irv commented Jun 13, 2025

Describe the bug

DataFrame.assign() should allow lists and ranges

To Reproduce

import pandas as pd
df = pd.DataFrame({"a": [1,2,3]})
df = df.assign(b=lambda df: range(len(df)), c=lambda df: [10,20,30])

Need to update IntoColumn in _typing.pyi to include list[Scalar] and range

Please complete the following information:

  • OS: Windows 11
  • python version 3.10
  • pyright 1.1.400
  • version of installed pandas-stubs : development version
@Dr-Irv Dr-Irv changed the title DataFrame.assign( should allow a list and a range DataFrame.assign() should allow a list and a range Jun 13, 2025
@loicdiridollou loicdiridollou mentioned this issue Jun 13, 2025
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GH1248/GH1249 DataFrame.assign and MultiIndex.from_product Series/Index loicdiridollou/pandas-stubs
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