Python 如何使x_标签显示在彼此相连的子批次上？

我正在学习如何创建一个仪表板来跟踪我的开支。第一个目标是创建一个简单的条形图，跟踪我在两个最大类别的收入和支出。下面提供了条形图的代码

income = 5000
immediate_obligations = -1000
true_expenses = -2000
total = income - immediate_obligations - true_expenses

fig,ax = plt.subplots()
ax.bar(x=[1],height=[income],color = 'green',tick_label="Income")
ax.bar(x=[2,3],height=[immediate_obligations,true_expenses], color = 'red', tick_label=["Immediate Obligations","true_expenses"])
ax.bar(x=[4],height=[total], color = 'blue')

fig.suptitle('Spending Current Month')

我之所以选择三个轴，是为了能够将收入标为绿色，支出标为红色，差额标为蓝色。这些绘图渲染得很好，因为它们不重叠。但是，勾号标签仅显示最新创建的绘图。这是有道理的，但如何将标签应用于整个绘图

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参数

color

。您可以传递一个数组，该数组的颜色为每个条形图。因此，只需一次调用

bar（）

，即可实现输出：

income = 5000
immediate_obligations = -1000
true_expenses = -2000
total = income - immediate_obligations - true_expenses

bars = [income, immediate_obligations, true_expenses, total]
colors = ['g','r','r','b']
labels = ['Income','Immediate obligations','True expenses','Total']

fig,ax = plt.subplots()
ax.bar(x=range(len(bars)), height=bars, color=colors, tick_label=labels)
fig.suptitle('Spending Current Month')