How to filter a DataFrame using multiple conditional statements

import pandas as pd

# We read a sample dataset from the web.
df = pd.read_csv('https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv')

# The mask
mask_1 = df["sepal_length"] > .4
mask_2 = df["sepal_width"] > 3.1

# We apply the mask
print(df[mask_1 & mask_2])

# We apply the mask
print(df[(df["sepal_length"] > .4) & (df["sepal_width"] > 3.1)])