Typeerror: ‘styler’ object is not subscriptable

Error: TypeError: ‘Styler’ object is not subscriptable

This error occurs when trying to access elements or items of a ‘Styler’ object using square brackets, like a list or a dictionary, but it is not supported.

The ‘Styler’ object is part of the pandas library in Python, specifically the pandas.DataFrame.style property, which is used for styling dataframes. It provides a way to apply styles and formatting to the displayed data in a dataframe.

To understand this error better, let’s consider an example. Assume we have a pandas dataframe called ‘df’ and we want to style it using the ‘Styler’ object:

    import pandas as pd
    
    # Create a sample dataframe
    df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})
    
    # Create a Styler object
    styler = df.style
  

Now, if we try to access an element or an item of the ‘styler’ object using square brackets, like styler[0], we will encounter the “TypeError: ‘Styler’ object is not subscriptable” error because it does not support indexing or item access like a list or a dictionary:

    # Attempt to access an element of 'styler'
    print(styler[0]) # Raises TypeError
  

The correct way to use ‘Styler’ object is to apply styling and formatting methods provided by the object itself, such as styler.apply() or styler.format(), to modify the appearance of the dataframe. It is not meant to be accessed like a collection of elements.

    # Applying styling and formatting
    styled_df = styler.apply(lambda x: ['background-color: yellow' if x.name == 'A' else '' for _ in x], axis=0)
    
    # Display the styled dataframe
    styled_df
  

In this example, we applied background color to the cells of column ‘A’ using the ‘apply’ method of the ‘Styler’ object before displaying the styled dataframe.