Delete column from pandas DataFrame

Question

When deleting a column in a DataFrame I use:

del df[\'column_name\']

And this works great. Why can\'t I use the following?

Answer 1

Deleting a column using iloc function of dataframe and slicing, when we have a typical column name with unwanted values.

df = df.iloc[:,1:] # removing an unnamed index column

Here 0 is the default row and 1 is 1st column so ,1 where starts and stepping is taking default values, hence :,1: is our parameter for deleting the first column.