python 实现读取一个excel多个sheet表并合并的方法

import xlrd
import pandas as pd
from pandas import DataFrame
 
DATA_DIR = 'E:/' 

excel_name = '%s2017.xls' % DATA_DIR
wb = xlrd.open_workbook(excel_name)
# print(wb)
 
# 获取workbook中所有的表格
sheets = wb.sheet_names()
# print(sheets)
 
# 循环遍历所有sheet
df_28 = DataFrame()
for i in range(len(sheets)):

  # skiprows=2 忽略前两行
  df = pd.read_excel(excel_name, sheet_name=i, skiprows=2, index=False, encoding='utf8')
  df_28 = df_28.append(df)

# 去除缺省值
df_28 = df_28.dropna()
df_28 = df_28.reset_index(drop=True)
print(len(df_28))