Get the number of rows, columns, elements of pandas.DataFrame Display number of rows, columns, etc. df.index.values # get a list of all the column names indexNamesArr = dfObj.index.values For example. In the next section, before learning the methods for getting the column names of a dataframe, we will import some data to play with. Related to rows, there are two settings: max_rows and min_rows. The shape property returns a tuple representing the dimensionality of the DataFrame. for row in DataFrameReader(df): print(row.my_column_name) print(row.to_dict()) print(row['my_column_name']) print(row.tolist()) And preserves the values/ name mapping for the rows being iterated. Extract rows/columns by index or conditions. To view the first or last few records of a dataframe, you can use the methods head and tail. For example, if our dataframe is called df we just type print(df.columns) to get all the columns of the Pandas dataframe. “iloc” in pandas is used to select rows and columns by number, in the order that they appear in the DataFrame. In this tutorial, we will learn how to get the shape, in other words, number of rows and number of columns in the DataFrame, with the help of examples. To get the shape of Pandas DataFrame, use DataFrame.shape. Creating our Dataframe. Get Shape of Pandas DataFrame. Pandas Movies Exercises, Practice and Solution: Write a Pandas program to display the first 10 rows of the DataFrame. To return the first n rows use DataFrame.head([n]) df.head(n) To return the last n rows use DataFrame.tail([n]) df.tail(n) Without the argument n, these functions return 5 rows. Rows is deleted by dropping Rows by index label. Data Frame before Adding Row-Data Frame after Adding Row-For more examples refer to Add a row at top in pandas DataFrame Row Deletion: In Order to delete a row in Pandas DataFrame, we can use the drop() method. If you’re wondering, the first row of the dataframe has an index of 0. To get started, let’s create our dataframe to use throughout this tutorial. Get Row Index Label Names from a DataFrame object. Note that the slice notation for head/tail would be: To get the list of all row index names from a dataFrame object, use index attribute instead of columns i.e. Let’s print the movies Dataframe again along with the default values of max_rows and min_rows: I have pandas dataframe df1 and df2 (df1 is vanila dataframe, df2 is indexed by 'STK_ID' & 'RPT_Date') : >>> df1 STK_ID RPT_Date TClose sales discount 0 000568 20060331 3.69 5.975 NaN 1 000568 20060630 9.14 10.143 NaN 2 000568 20060930 9.49 13.854 NaN 3 000568 20061231 15.84 19.262 NaN 4 000568 20070331 17.00 6.803 NaN 5 000568 20070630 26.31 12.940 NaN 6 000568 20070930 … That would return the row with index 1, and 2. The row with index 3 is not included in the extract because that’s how the slicing syntax works. The format of shape would be (rows, columns). For example, we are interested in the season 1999–2000. When the number of rows is greater than max_rows, the Dataframe is truncated and it is shown min_rows rows. Both row and column numbers start from 0 in python. The iloc syntax is data.iloc[, ]. Note also that row with index 1 is the second row. : df.info() The info() method of pandas.DataFrame can display information such as the number of rows and columns, the total memory usage, the data type of each column, and the number of … We can use those to extract specific rows/columns from the data frame. Obviously, is a lot slower than using apply and Cython as indicated above, but is necessary in some circumstances. In our dataset, the row and column index of the data frame is the NBA season and Iverson’s stats, respectively. Row with index 2 is the third row and so on. We’ll create one that has multiple columns, but a small amount of data (to be able to print the whole thing more easily). After this, we can work with the columns to access certain columns, rename a column, and so on. S how the slicing syntax works apply and Cython as indicated above, but necessary. 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