bar_chart

def bar_chart(credit, debit, balance):

    x = [x[0:6] for (x,y) in balance]
    y1 = [y for (x,y) in credit]
    y2 = [y for (x,y) in debit]
    y3 = [y for (x,y) in balance]

    n = len(x)
    index = np.arange(n)

    fig, ax = plt.subplots(1, 1, figsize=(16,7), dpi= 96)
    plt.plot(x,y3,label='Balance',color='black',linewidth=2.0)
    b1=plt.bar(index-0.0625,y1,label='Credit',color=[(0.06667,0.5647,0.7961)],width=0.125)
    b2=plt.bar(index+0.0625,y2,label='Debit',color=[(1,0.4118,0.4118)],width=0.125)

    plt.xticks(fontsize=14, rotation = 45, horizontalalignment='center',color='darkgrey')
    plt.yticks(fontsize=14,color='darkgrey')
    plt.xlim(-1.0)
    ax.yaxis.grid(alpha=0.5)
    plt.yscale('log', basey=1.00001)

    for axis in [ax.yaxis]:
        axis.set_major_formatter(ScalarFormatter())

    plt.gca().spines["top"].set_alpha(0)
    plt.gca().spines["bottom"].set_alpha(0.5)
    plt.gca().spines["right"].set_alpha(0)
    plt.gca().spines["left"].set_alpha(0)
    plt.savefig('fig1.png',orientation='portrait',transparent=True, bbox_inches=None, pad_inches=0)