selecting rows based on multiple column values in pandas dataframe

Question

I have a pandas DataFrame df:

import pandas as pd

data = {\"Name\": [\"AAAA\", \"BBBB\"],
        \"C1\": [25, 12],
              


        

Answer 1

df.query(
    "0 < C1 < 20 and 0 < C2 < 20 and 0 < C3 < 20"
)

or

df.query("0 < @df < 20").dropna()

Using @foo in df.query refers to the variable foo in the environment.