Let us first create a dataframe and then we will try to get first 3 rows of this dataframe using several methods.
Code: Creating a Dataframe.
Getting first 3 Rows of the above Dataframe :
Method 1: Using head(n) method.
This method returns top n rows of the dataframe where n is an integer value and it specifies the number of rows to be displayed. The default value of n is 5 therefore, head function without arguments gives the first five rows of the dataframe as an output. So to get first three rows of the dataframe, we can assign the value of n as ‘3’.
Below is the code for getting first three rows of the dataframe using head() method:
Method 2: Using iloc[ ].
This can be used to slice a dataframe by using the starting index and ending index of the sliced dataframe that we want.
Syntax: dataframe.iloc[statrt_index, end_index+1]
So if we want first three rows, i.e. from index 0 to index 2, we can use the following code:
Method 3: Using index of the rows.
iloc[ ] method can also be used by directly stating the indices of the rows we want in the iloc method. Say to get row with indices m and n iloc[ ] can be used as:
Syntax: Dataframe.iloc [ [m,n] ]
Following is the code to get first three rows of the dataframe using this method:
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.