How to perform addition and subtraction in Pandas using Python

# Import the Pandas library
import pandas as pd

# We create our example dataframe
df = pd.DataFrame(index = [2018, 2019, 2020, 2021, 2022], data=
                  {"eu_sales" : [12334, 12344, 521323, 709123, 1024566],
                   "us_sales" : [10452, 24198, 345222, 629452, 925123]})

# Summing up individual columns
print(df["eu_sales"] + df["us_sales"])

# Summing up all columns
print(df.sum(axis=1))

df["total_sales"] = df["eu_sales"] + df["us_sales"]

# Summing up all rows
print(df.sum())

# Subtracting individual columns
print(df["total_sales"] - df["us_sales"])