请帮我写一段用pyecharts画五个不同颜色的柱状图，且每个柱状图颜色渐变

好的，以下是使用 pyecharts 画五个不同颜色的渐变柱状图的示例代码：

from pyecharts import options as opts
from pyecharts.charts import Bar
from pyecharts.globals import ThemeType

# 五个柱状图的数据
data1 = [20, 30, 40, 50, 60]
data2 = [30, 50, 70, 90, 110]
data3 = [40, 60, 80, 100, 120]
data4 = [50, 70, 90, 110, 130]
data5 = [60, 80, 100, 120, 140]

# 创建柱状图实例
bar = Bar(init_opts=opts.InitOpts(theme=ThemeType.LIGHT))

# 添加数据和颜色渐变
bar.add_xaxis(['A', 'B', 'C', 'D', 'E'])
bar.add_yaxis('data1', data1, itemstyle_opts=opts.ItemStyleOpts(
    color=opts.ColorGradient(
        color_start='#00ffff',
        color_end='#ff00ff'
    )
))
bar.add_yaxis('data2', data2, itemstyle_opts=opts.ItemStyleOpts(
    color=opts.ColorGradient(
        color_start='#ffff00',
        color_end='#0000ff'
    )
))
bar.add_yaxis('data3', data3, itemstyle_opts=opts.ItemStyleOpts(
    color=opts.ColorGradient(
        color_start='#ff00ff',
        color_end='#00ff00'
    )
))
bar.add_yaxis('data4', data4, itemstyle_opts=opts.ItemStyleOpts(
    color=opts.ColorGradient(
        color_start='#0000ff',
        color_end='#ffff00'
    )
))
bar.add_yaxis('data5', data5, itemstyle_opts=opts.ItemStyleOpts(
    color=opts.ColorGradient(
        color_start='#00ff00',
        color_end='#ff00ff'
    )
))

# 设置标题和坐标轴
bar.set_global_opts(
    title_opts=opts.TitleOpts(title='柱状图示例', subtitle='颜色渐变'),
    xaxis_opts=opts.AxisOpts(name='X轴'),
    yaxis_opts=opts.AxisOpts(name='Y轴'),
)

# 渲染图像
bar.render('gradient_bar.html')

这段代码会生成一个名为 `gradient_bar.html` 的 HTML 文件，用浏览器打开即可查看柱状图。每个柱状图的颜色都是渐变的，五个柱状图的颜色也不同。