replace null values in pandas code example

Example 1: replace nan in pandas

df['DataFrame Column'] = df['DataFrame Column'].fillna(0)

Example 2: pandas replace null values with values from another column

#Python
#Col 1 = where you want the values replaced
#Col 2 = where you want to take the values from
df.["Col 1"].fillna(df.["Col 2"], inplace=True)

Example 3: pandas replace nan

data["Gender"].fillna("No Gender", inplace = True)

Example 4: replace "-" for nan in dataframe

df.replace(np.nan,0)

Example 5: fillna string

# 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)