Answers for "pandas search column for value"

pandas select by column value

df.loc[df['column_name'] == some_value]

only keep rows of a dataframe based on a column value

df.loc[(df['column_name'] >= A) & (df['column_name'] <= B)]

Pandas how to find column contains a certain value

import pandas as pd
df = pd.DataFrame({
    'A': [1, 4, 7, 1, 4],
    'B': [2, 5, 8, 2, 5],
    'C': [3, 6, 9, 3, 6]
})