Python学习之使用pycharts

简介：

通过读取【charts_demo.xlsx】文件数据，使用pycharts生成名为【page_simple_layout.html】的HTML图表。

from pyecharts.charts import Bar,Page from pyecharts import options as opts from openpyxl import load_workbook import numpy as np import math from pyecharts.globals import ThemeType import os #split the arr into N chunks def chunks(arr, m): n = int(math.ceil(len(arr) / float(m))) return [arr[i:i + n] for i in range(0, len(arr), n)] def build_bar(): hor_num = ws['C5'].value ord_num = ws['C4'].value xtype=[] xline=[] yline=[] yline2=[[]] for col in ws.iter_cols(min_col=8, max_col=8+ord_num-1, min_row=3, max_row=3): for cell in col: xtype.append(cell.value) for col in ws.iter_cols(min_col=7, max_col=7, min_row=4, max_row=hor_num+3): for cell in col: xline.append(cell.value) for col in ws.iter_cols(min_col=8, max_col=8+ord_num-1, min_row=4, max_row=hor_num+3): for cell in col: yline.append(format((cell.value),'.0f'))#yline.append(format((cell.value),'.1f')) yline2 = chunks(yline,ord_num) #print(xtype) #print(xline) #print(yline) #print(yline2) bar2 = Bar(init_opts=opts.InitOpts(theme=ThemeType.LIGHT,width='1200px')) #修改源文件使保存的图片背景为白色 opts.ToolBoxFeatureSaveAsImageOpts(background_color="white") bar2.add_xaxis(xline) j=0 for i in yline2: bar2.add_yaxis(xtype[j],i) j=j+1 if j>3: j=0 bar2.set_global_opts( title_opts=opts.TitleOpts(title=str(ws['G3'].value)), tooltip_opts=opts.TooltipOpts(trigger="axis"), toolbox_opts=opts.ToolboxOpts(is_show=True,feature=opts.ToolBoxFeatureOpts(save_as_image=opts.ToolBoxFeatureSaveAsImageOpts(background_color="#F7F7F7"))), xaxis_opts=opts.AxisOpts(type_="category", boundary_gap=True), #datazoom_opts=opts.DataZoomOpts(range_start=10,range_end=90), # 坐标轴进行缩放 ) return bar2 excel_name = "charts_demo.xlsx" html_name = "page_simple_layout.html" if __name__=='__main__': current_path = os.getcwd() excel_path = current_path+"\\"+excel_name html_patch = current_path+"\\"+html_name wb = load_workbook(excel_path, data_only=True) ws=wb['Sheet1'] # 简单布局 page = Page(layout=Page.SimplePageLayout) # 将上面定义好的图添加到 page page.add(build_bar()) page.render(html_patch) print('finish')

通过指定单元格G3的内容为图表名称，指定纵坐标个数【语文、数学、总分】，横坐标个数【张三、李四、王五、赵六、孙七、周八、吴九】：

运行py程序后，可以通过右上角一排按钮转换为折线图、柱状图，保存图片等。效果如下：