A function to plot percentage of nulls in a dataframe (using seaborn and matplotlib)

plot_nulls.py

def plot_nulls(dataframe):
    
    def null_perc(dataframe):
        return 100*dataframe.isnull().sum()/len(dataframe)
    
    nulls = null_perc(dataframe)
    plt.figure(1, figsize=(5,20)) # Customize this if needed
    ax = sns.barplot(x=nulls, y=list(range(len(nulls))), orient='h', color="blue")
    _ = plt.yticks(plt.yticks()[0], nulls.index)
    ax.xaxis.set_ticks_position('top')
    _ = plt.title("Null percentage (lower is better)", fontsize=15, pad=30)