'''
 # Created by Hailong Liu
  # for work
     # 2020.11.21
'''
import openpyxl
#导入表格
wb = openpyxl.load_workbook('E:/处理.xlsx')
#存入一个可处理的对象中
sheet = wb['处理数据']

lst_time = [sheet.cell(row = i, column = 1).value for i in range(1,17270)]
lst_flow = [sheet.cell(row = i, column = 2).value for i in range(1,17270)]
lst_length = [sheet.cell(row = i, column = 3).value for i in range(1,17270)]

lst_arrive = []
#计算到达量
for i in range(1,len(lst_flow)):
 rz = lst_flow[i] - lst_length[i]
 if rz >= 0:
  lst_arrive.append(lst_flow[i])
 else:
  lst_arrive.append(lst_length[i]-lst_length[i-1]+lst_flow[i])

#输出验证
for i in range(0,len(lst_flow)-1):
 print(lst_arrive[i])

#添加到表格中并保存
sheet['D1'] = "到达量"
for i in range(2,len(lst_arrive)+1):
 sheet.cell(row = i, column = 4).value = lst_arrive[i-1]
# wb.save('E:/处理(改).xlsx')

wb=Workbook()#新建表格
wb.save(filename="")#保存表格
wb=load_workbook()#打开已有表格
ws=wb.active#选取当前表格活跃的sheet
ws.wb[]#根据sheetname打开sheet
ws=wb.creat_sheet(title='')#新建一个sheet
ws.cell(row=1,column=1).value=''#往ws这个sheet第一行第一列写入
ws.max_column#获取最大列数
ws.cell(row=1,column=1).value#获取第一行第一列的值
ws['A1'].column#获取该数据列数