Matplotlib自适应布局时如何增加表格单元格上下内边距

你当前的表格尺寸、字号都合适，仅单元格上下空间拥挤，可通过以下两种方式增加上下内边距：

• 方法一：为所有单元格设置统一内边距
  Matplotlib表格的单元格对象支持set_pad()方法，遍历所有单元格即可设置内边距，同时需调整画布高度适配修改后的表格：

  columns=['test', 'test', 'test', 'test', 'test', 'test', 'test'] 
  rows=['test', 'test', 'test', 'test']
  data=[['12.103700223192147', '125.7421234247654', '2833.324510310368', '3.3228806335297043', '103.23943179349797', '3.5559560514887627', '3.531198576041594'], ['312.22548840603355', '335.1632073701661', '688.6576628644414', '2.0598429919314976', '18.362768351047666', '1.3152545139887966', '1.3155809229679902'], ['461.0540288130374', '484.64756706242093', '757.5346438101953', '5.1333110653922684', '15.039352280544852', '1.5898237491783822', '1.5902652486082376'], ['263.82124695572776', '313.264919044118', '276.03008066454083', '140.61329994689453', '7.034269824508681', '6.71122466853062', '4.613448380627191']]
  
  wpad,hpad=0.1,0.1
  # 增加画布高度，适配内边距调整后的表格
  fig = plt.figure(figsize=(len(columns)*3+wpad, len(rows)*3.5+hpad))
  tab=plt.table(data,rowLabels=rows,colLabels=columns,cellLoc='center',loc='top')
  tab.auto_set_font_size(False)
  tab.auto_set_column_width(col=list(range(len(columns))))
  
  # 遍历所有单元格，设置上下左右内边距（0.1对应约0.1英寸的视觉效果）
  for cell in tab.get_celld().values():
      cell.set_pad(0.1)
  
  plt.axis('off')
  plt.show()
  

  注：set_pad()会同时调整单元格的上下左右内边距，若需单独控制上下空间，可使用方法二。

• 方法二：单独调整行高实现上下空间扩展
  若只想增加上下方向的空间，可直接修改每行的高度，同样需要调整画布高度以完整显示表格：

  columns=['test', 'test', 'test', 'test', 'test', 'test', 'test'] 
  rows=['test', 'test', 'test', 'test']
  data=[['12.103700223192147', '125.7421234247654', '2833.324510310368', '3.3228806335297043', '103.23943179349797', '3.5559560514887627', '3.531198576041594'], ['312.22548840603355', '335.1632073701661', '688.6576628644414', '2.0598429919314976', '18.362768351047666', '1.3152545139887966', '1.3155809229679902'], ['461.0540288130374', '484.64756706242093', '757.5346438101953', '5.1333110653922684', '15.039352280544852', '1.5898237491783822', '1.5902652486082376'], ['263.82124695572776', '313.264919044118', '276.03008066454083', '140.61329994689453', '7.034269824508681', '6.71122466853062', '4.613448380627191']]
  
  wpad,hpad=0.1,0.1
  # 调整画布高度，适配行高增加后的表格
  fig = plt.figure(figsize=(len(columns)*3+wpad, len(rows)*3.5+hpad))
  tab=plt.table(data,rowLabels=rows,colLabels=columns,cellLoc='center',loc='top')
  tab.auto_set_font_size(False)
  tab.auto_set_column_width(col=list(range(len(columns))))
  
  # 遍历所有行（包含表头行），设置统一行高
  total_rows = len(rows) + 1
  target_height = 0.12  # 默认行高约0.08，数值越大上下空间越充足
  for i in range(total_rows):
      for j in range(len(columns)):
          tab._cells[(i, j)].set_height(target_height)
  
  plt.axis('off')
  plt.show()
  

  注：target_height可根据需求调整，数值越大，单元格上下空间越宽松。

内容的提问来源于stack exchange，提问作者samman