[英]How to append a pandas dataframe to an excel sheet
Hi i have seen solutions to more complicated problems but am trying to do the following:嗨,我已经看到了更复杂问题的解决方案,但我正在尝试执行以下操作:
Append a dataframe to an excel table. Append 到 dataframe 到 excel 表。 I have an excel file which contains data like:我有一个 excel 文件,其中包含以下数据:
# Create Initial Excel
data = [['tom', 10,1,'a'], ['matt', 15,5,'b'],['nick', 18,2,'b'],['luke', 12,6,'b'],['geoff', 20,10,'a']]
# Create the pandas DataFrame
df = pd.DataFrame(data, columns = ['Name', 'Attempts','Score','Category'])
df
Name Attempts Score Category
0 tom 10 1 a
1 matt 15 5 b
2 nick 18 2 b
3 luke 12 6 b
4 geoff 20 10 a
df.to_excel('Excel.xlsx',index=False)
Each week i get new data in the form of:每周我都会以以下形式获得新数据:
#New Dataframe
data2 = [['mick', 10,1,'a'], ['matt', 15,5,'b'],['jim', 18,2,'b'],['mark', 12,6,'b'],['geoff', 20,10,'a']]
df2 = pd.DataFrame(data2, columns = ['Name', 'Attempts','Score','Category'])
df2
Name Attempts Score Category
0 mick 10 1 a
1 matt 15 5 b
2 jim 18 2 b
3 mark 12 6 b
4 geoff 20 10 a
I have tried the following to append the new data underneath the spreadsheet data:我已经尝试了以下 append 电子表格数据下的新数据:
#Append DF2
with pd.ExcelWriter('Excel.xlsx',
mode='a') as writer:
df2.to_excel(writer,'Sheet1',index=False,header=False)
But it has appended to a new sheet?但它已附加到新工作表?
I am just hoping to add to my excel so that it appears:我只是希望添加到我的 excel 以便它出现:
Name Attempts Score Category
0 tom 10 1 a
1 matt 15 5 b
2 nick 18 2 b
3 luke 12 6 b
4 geoff 20 10 a
0 tom 10 1 a
1 matt 15 5 b
2 nick 18 2 b
3 luke 12 6 b
4 geoff 20 10 a
I found my answer here append dataframe to excel with pandas and the specifics for my question我在这里找到了我的答案append dataframe 到 excel 和 Z3A43B4F88325D24022C0EFA9的具体问题
from openpyxl import load_workbook
path = "Excel.xlsx"
book = load_workbook(path)
writer = pandas.ExcelWriter("Excel.xlsx", engine='openpyxl')
writer.book = book
writer.sheets = {ws.title: ws for ws in book.worksheets}
df2.to_excel(writer, startrow=writer.sheets['Sheet1'].max_row, index = False,header= False)
writer.save()
Here an approach you can try, something similar was mentioned in this answer .您可以在此处尝试一种方法,此答案中提到了类似的方法。 What I suggest is that first concatenate your 2 data-frames then write to the Excel file, instead of trying to merge the Excel files.我的建议是首先连接您的 2 个数据帧,然后写入 Excel 文件,而不是尝试合并 Excel 文件。
import pandas as pd
# Create Initial Excel
data = [['tom', 10,1,'a'], ['matt', 15,5,'b'],['nick', 18,2,'b'],['luke', 12,6,'b'],['geoff', 20,10,'a']]
# Create the pandas DataFrame
df = pd.DataFrame(data, columns = ['Name', 'Attempts','Score','Category'])
#New Dataframe
data2 = [['mick', 10,1,'a'], ['matt', 15,5,'b'],['jim', 18,2,'b'],['mark', 12,6,'b'],['geoff', 20,10,'a']]
df2 = pd.DataFrame(data2, columns = ['Name', 'Attempts','Score','Category'])
# Prepare a list of the dataframes, needed for the concat method
all_df = [df, df2]
out_df = pd.concat(all_df).reset_index(drop=True)
# Write concatenated dataframes to Excel
out_df.to_excel("Combined.xlsx", index=False)
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