Highlight Pandas DataFrame’s specific columns using apply()
Let us see how to highlight specific columns of a Pandas DataFrame. We can do this using the apply() function of the Styler class.
Styler.apply()
Syntax : Styler.apply(func, axis = 0, subset = None, **kwargs)
Parameters :
- func : function should take a Series or DataFrame (depending on-axis), and return an object with the same shape. Must return a DataFrame with identical index and column labels when axis = None.
- axis : apply to each column (axis=0 or ‘index’) or to each row (axis=1 or ‘columns’) or to the entire DataFrame at once with axis = None
- subset : valid indexer to limit data to before applying the function.
- **kwargs : dict pass along to func.
Returns : Styler
Let’s understand with examples:
Example 1 :
# importing pandas as pd import pandas as pd # creating the dataframe df = pd.DataFrame({"A" : [14, 4, 5, 4, 1], "B" : [5, 2, 54, 3, 2], "C" : [20, 20, 7, 3, 8], "D" : [14, 3, 6, 2, 6], "E" : [23, 45, 64, 32, 23]}) print("Original DataFrame :") display(df) # function definition def highlight_cols(x): # copy df to new - original data is not changed df = x.copy() # select all values to green color df.loc[:, :] = 'background-color: green' # overwrite values grey color df[['B', 'C', 'E']] = 'background-color: grey' # return color df return df print("Highlighted DataFrame :") display(df.style.apply(highlight_cols, axis = None)) |
chevron_right
filter_none
Output :
Example 2 :
# importing pandas as pd import pandas as pd # creating the dataframe df = pd.DataFrame({"Name" : ["Yash", "Ankit", "Rao"], "Age" : [5, 2, 54]}) print("Original DataFrame :") display(df) # function definition def highlight_cols(x): # copy df to new - original data is not changed df = x.copy() # select all values to yellow color df.loc[:, :] = 'background-color: yellow' # return color df return df print("Highlighted DataFrame :") display(df.style.apply(highlight_cols, axis = None)) |
chevron_right
filter_none
Output :
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.
Article Contributed By :
Article Tags :
