title: How can i change the column values of csv file using with pandas
body: <p>Here in my program I have 4 columns of csv file, in that x,y values having 0,0 values I want to change those 0,0 values to my desired values without changing other x,y values. Can you please help me how to change these values?</p>
  
  <p>I tried this given code but other values of x,y values are also changing because here I am  adding 3 value for whole x, but I don't want change remaining values I want to change the 0,0 x,y values to my desired values only, so can you please guide me. Thank you in advance </p>
  
  <pre><code>import pandas as pd
  
  df = pd.read_csv("Tunnel.csv",delimiter= ',')
  df['X'] = df['X'] + 3
  df['Y'] = df['Y'] + 4
  
  print(df)
  </code></pre>
  
  <p>This is my csv_file<a href="https://i.stack.imgur.com/knqpT.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/knqpT.jpg" alt="enter image description here"></a></p>