在excel python中存储来自for循环的数据答案

【问题标题】：Storing data from a for loop in excel python在excel python中存储来自for循环的数据
【发布时间】：2021-07-28 16:00:22
【问题描述】：

想将for循环中的所有数据存储在excel文件中，目前只存储最后一个输出：

import pandas
import openpyxl

outputFile = 'outputData.xlsx'
    
workbook = openpyxl.load_workbook(os.getcwd() + '/sourceData.xlsx')
    
sheet = workbook["Sheet1"]
    
for i in range(2, sheet.max_row + 1):
       <I do some ops to copy the data>
       data = pyperclip.paste() #Want this data to be stored in the outPut excel, there is different input for every cell, so there will also be different output
       df = pd.DataFrame({'Address':[mapData]})
       df2 = pd.DataFrame()
       df2 = df2.append(df, ignore_index=True, sort=False)
    
writer = ExcelWriter(outputFile)
df2.to_excel(writer,'Sheet1',index=False)
writer.save()

【问题讨论】：

标签： python excel pandas for-loop openpyxl

【解决方案1】：

只需将df2 首次初始化移出循环：

...
# define df2 here, just once
df2 = pd.DataFrame()
for i in range(2, sheet.max_row + 1):
       ... # your operations
       df = pd.DataFrame({'Address':[mapData]})
       # append df2 immediately after generation of df
       df2 = df2.append(df, ignore_index=True, sort=False)

# save as before
writer = ExcelWriter(outputFile)
df2.to_excel(writer,'Sheet1',index=False)
writer.save()

【讨论】：