helper.py

def fill_title_and_subtitle(title:str, subtitle:str):
    return f"{title}<br><sub>{subtitle}</sub>"

def create_bar_chart(data: pd.DataFrame, xcolumn: str, ycolumn:str, title:str, colors:str, ylabel="Count", n=None):
    hovertemplate ='<br><b>%{x}</b>'+f'<br><b>{ylabel}: </b>'+'%{y}<br><extra></extra>'    
    data = data.sort_values(ycolumn, ascending=False).dropna(subset=[ycolumn])        
    
    if n is not None: 
        data = data.iloc[:n]
    else:
        n = ""
    fig = go.Figure(go.Bar(
                    hoverinfo='skip',
                     x=data[xcolumn], 
                     y=data[ycolumn], 
                     hovertemplate = hovertemplate,
                     marker=dict(
                         color = data[ycolumn],
                         colorscale=colors,
                        ),
                    ),
                )
    
    fig.update_layout(
        title=title,
        xaxis_title=f"Top {n} {xcolumn.title()}",
        yaxis_title=ylabel,
        plot_bgcolor='rgba(0,0,0,0)',
        hovermode="x"
    )
    
    fig.show()