Unlike Pandas iloc, loc further takes column names as column argument. We use iloc in pandas for selecting rows on the basis of their index location. This can be done by selecting the column as a series in Pandas. Single Column in Pandas DataFrame; Multiple Columns in Pandas DataFrame; Example 1: Rename a Single Column in Pandas DataFrame. Well, In this article, We will see a different variations of iloc in python syntax. We called the iloc[] using dot notation after the name of the Pandas DataFrame. Using iloc, loc, & ix to select rows and columns in Pandas DataFrames, Each column is a variable, and is usually named. Select a Single Column in Pandas. iloc in python syntax : Pandas.DataFrame.iloc is a unique inbuilt method that returns integer-location based indexing for selection by position. Syntax : pandas.DataFrame.iloc[, ] The third was to select columns of a dataframe in Pandas is to use iloc[] function. With iloc[] we can not use the names of the columns, but we need to specify the index of the columns. You can pass the column name as a string to the indexing operator. In the above two methods of selecting one or more columns of a dataframe, we used the column names to subset the dataframe. The .iloc[] function is utilized to access all the rows and columns as a Boolean array. iloc in python syntax is dataframe.iloc[row_num, col_num]. This would also interpret the columns types from scratch. headers = df.iloc[0] new_df = pd.DataFrame(df.values[1:], columns=headers) Solution 4: You can specify the row index in the read_csv or read_html constructors via the header parameter which represents Row number(s) to use as the column names, and the start of the data. Say that you created a DataFrame in Python, but accidentally assigned the wrong column name. The disadvantage with this method is that we need to provide new names for all the columns even if want to rename only some of the columns. Pandas Dataframe.iloc[] function is used when an index label of the data frame is something other than the numeric series of 0, 1, 2, 3….n, or in some scenario, the user doesn’t know the index label. Pandas has provided iloc and loc functions to select rows and columns. For example, to select only the Name column, you can write: Working of the Python iloc() function. Introduction to Pandas Dataframe.iloc[] Pandas Dataframe.iloc[] is essentially integer number position which is based on 0 to length-1 of the axis, however, it may likewise be utilized with a Boolean exhibit. Pandas iloc column name. Python offers us with various modules and functions to deal with the data. Output: Method #2: By assigning a list of new column names The columns can also be renamed by directly assigning a list containing the new names to the columns attribute of the dataframe object for which we want to rename the columns. In the next loc example, we are going to select all the data from the ‘SASname’ column. Now, if you want to select just a single column, there’s a much easier way than using either loc or iloc. Inside of the iloc[] method, you see that we’re retrieving rows ‘ 1:5 ‘ and columns ‘ 0:3 .’ This means that we want to retrieve rows 1 to 4 (remember, the “stop” index is excluded , so it will exclude 5 ). I rarely select columns without their names. df2.loc[:, 'SASname'] Code language: Python (python) Here the row_num and col_name may be a single value or a list as well. This means that we can pass it a column name to select data from that column. These functions are very helpful in data preprocessing for data science and machine learning projects. 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