::contentReference[oaicite:0]{index=0} BUG

ChatGPT Bugs
11

+1 got this in a comment to a Python code snippet through the chat interface

frac = 0.25    # 25 % of each group
sampled = df.filter(
    pl.int_range(pl.len())              # 0…n-1 per group
      .shuffle()                       # random order :contentReference[oaicite:3]{index=3}
      .over("group")                   # windowed by the grouping column(s) :contentReference[oaicite:4]{index=4}
      < (pl.len().over("group") * frac).ceil()
)