title: Want to check the cell by cell value of dataframe is null or not if found null then it should fill with 0 using pandas
body: <p>I just wanted to check the cell by cell value of the dataframe is null or nan if found nan then it should be fill with zero using pandas .I have one csv file which contains the some NAN values</p>
  <pre><code>import pandas as pd
  
  df = pd.read_csv(&quot;samp.csv&quot;)
  print(df)
  for rowindex, row in df.iterrows():
      for colind , value in row.items():
         print(value)
  
         if value.isnull():
            
  </code></pre>