python pandas change index rows code example

Example 1: change dataframe value by index

x    y
A  NaN  NaN
B  NaN  NaN
C  NaN  NaN

df.at['C', 'x'] = 10

Example 2: pandas print index

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("data.csv")  
  
print(data.index)