How to get rows/index names in Pandas dataframe

While analyzing the real datasets which are often very huge in size, we might need to get the rows or index names in order to perform some certain operations.

Let’s discuss how to get row names in Pandas dataframe.

First, let’s create a simple dataframe with nba.csv

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("https://media.geeksforgeeks.org/wp-content/uploads/nba.csv")  
    
# calling head() method   
# storing in new variable  
data_top = data.head(10)  
    
# display  
data_top  

Now let’s try to get the row name from above dataset.

Method #1: Simply iterate over indices

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("nba.csv")  
  
# calling head() method   
# storing in new variable  
data_top = data.head()  
    
# iterating the columns 
for row in data_top.index: 
    print(row, end = " ") 

Output:

0 1 2 3 4 5 6 7 8 9

Method #2: Using rows with dataframe object

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("nba.csv")  
  
# calling head() method   
# storing in new variable  
data_top = data.head()  
    
# list(data_top) or 
list(data_top.index) 

Output:

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Method #3: index.values method returns an array of index.

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("nba.csv")  
  
# calling head() method   
# storing in new variable  
data_top = data.head()  
    
list(data_top.index.values) 

Output:

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Method #4: Using tolist() method with values with given the list of index.

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("nba.csv")  
  
# calling head() method   
# storing in new variable  
data_top = data.head()  
    
list(data_top.index.values.tolist()) 

Output:

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Method #5: Count number of rows in dataframe

Since we have loaded only 10 top rows of dataframe using head() method, let’s varify total number of rows first.

# iterate the indices and print each one 
for row in data.index: 
    print(row, end= " ") 

Output:

Now, let’s print the total count of index.

# Import pandas package  
import pandas as pd  
    
# making data frame  
data = pd.read_csv("nba.csv")  
  
row_count = 0
  
# iterating over indices 
for col in data.index: 
    row_count += 1
  
# print the row count 
print(row_count) 

Output:

My Personal Notes

Recommended Posts: