pandas: Cannot access member "astype" for type "float"

[tekumara]

Environment data

• Language Server version: Pylance language server 2020.8.3 (pyright 8c5415fd)
• OS and version: macOS
• Python version (& distribution if applicable, e.g. Anaconda): pandas==1.0.5

Expected behaviour

No type error

Actual behaviour

Cannot access member "astype" for type "float"
Member "astype" is unknown

Code Snippet / Additional information

import pandas as pd
from datetime import date


df = pd.DataFrame({
    'date': [
        date.fromisoformat('2020-02-14'),
        date.fromisoformat('2020-02-14'),
        date.fromisoformat('2020-03-14'),
    ],
    'amount': [50.0, 50.0, 12.0]
})

(df.groupby(["date"])["amount"]
 .sum()
 .astype(float)
 .to_frame(name="daily_total")
 .reset_index())

[jakebailey]

This issue has been fixed in version 2020.9.5, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/master/CHANGELOG.md#202095-16-september-2020