Python Pandas замените Nan на ноль
df.fillna('', inplace=True)
Joyous Jackal
df.fillna('', inplace=True)
# importing pandas module
import pandas as pd
# making data frame from csv file
nba = pd.read_csv("nba.csv")
# replacing na values in college with No college
nba["College"].fillna( method ='ffill', inplace = True)