apply function in python pandas code example
Example 1: give function to pandas apply
import pandas as pd
def sum(x, y, z, m):
return (x + y + z) * m
df = pd.DataFrame({'A': [1, 2], 'B': [10, 20]})
df1 = df.apply(sum, args=(1, 2), m=10)
print(df1)
Example 2: pandas apply function to dataframe
# iterate using this syntax where df is the pandas.DataFrame
# N. B.: a single tuple is composed by the row index
# and the values of the dataframe columns
for row in df.itertuples():
# do your stuff here