Index in dataframe code example

Example 1: finding the index of an element in a pandas df

In [48]: a
Out[48]: 
   c1  c2
0   0   1
1   2   3
2   4   5
3   6   7
4   8   9

In [49]: a.c1[a.c1 == 8].index.tolist()
Out[49]: [4]

Example 2: pandas print index

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

Example 3: df.index

The index (row labels) of the DataFrame.