使用openpyxl后无法打开excel文件

Question

我正在写入2张Excel文件-sheet1和geodata。

test_df = DataFrame({'col1':[1,2,3,4], 'col2':['a','b','c','d']})
test2_df = DataFrame({'lat':[89.0, 34.89, 23.56],'lng':[45.6, 67.9, 89.0]}, index = ['Paris','Spain','Barcelona'])

writer = pd.ExcelWriter('./test_book.xlsx', engine = 'xlsxwriter') 
test_df.to_excel(writer, 'sheet1')
test2_df.to_excel(writer, 'geodata')
writer.save()
writer.close() 

稍后将另一个新工作表sheet3写入同一文件，并将一些其他数据写入geodata。当我运行下面的代码块并尝试从文件夹中打开excel工作表时，我收到一条错误消息，指出它无法打开。

test3_df = DataFrame({'col1':[3,5,6], 'col2':['x','y','k']})
test2_new_df =  DataFrame({'lat':[44.6,38.9],'lng':[35.7,89.3]},index=['US','UK'])

from openpyxl import load_workbook

writer = pd.ExcelWriter('./test_book.xlsx', engine = 'openpyxl')
writer.book = load_workbook('./test_book.xlsx')
writer.sheets = dict((ws.title, ws) for ws in writer.book.worksheets)

test3_df.to_excel(writer,'Sheet3')
test2_new_df.to_excel(writer, 'geodata',header = False, startrow =len(test2_df)+1)
writer.close()

当我第二次运行此代码块时，便可以打开该文件。但是我在索引'US'中两次附加了与索引'UK'和geodata相关的新值。我尝试了多种方法，但是第一次运行此代码后无法打开文件。

Answer 1

您不应在代码中间import库。始终import位于代码顶部。我已经复制了您的代码，并对xlsxwriter作为引擎做了一个小小的更改，但生成的文件没有任何问题。

import openpyxl
from openpyxl import *
from openpyxl.styles import NamedStyle
from openpyxl import load_workbook
import pandas as pd

test_df = pd.DataFrame({'col1':[1,2,3,4], 'col2':['a','b','c','d']})
test2_df = pd.DataFrame({'lat':[89.0, 34.89, 23.56],'lng':[45.6, 67.9, 89.0]}, index = ['Paris','Spain','Barcelona'])

writer = pd.ExcelWriter('./test_book.xlsx', engine = 'openpyxl') #I changed this to openpyxl, from xlsxwriter
test_df.to_excel(writer, 'sheet1')
test2_df.to_excel(writer, 'geodata')
writer.save()
writer.close() 

test3_df = pd.DataFrame({'col1':[3,5,6], 'col2':['x','y','k']})
test2_new_df = pd.DataFrame({'lat':[44.6,38.9],'lng':[35.7,89.3]},index=['US','UK'])

writer = pd.ExcelWriter('./test_book.xlsx', engine = 'openpyxl')
writer.book = load_workbook('./test_book.xlsx')
writer.sheets = dict((ws.title, ws) for ws in writer.book.worksheets)

test3_df.to_excel(writer,'Sheet3')
test2_new_df.to_excel(writer, 'geodata',header = False, startrow =len(test2_df)+1)
writer.close()

输出：

工作表1：

地理数据：

Sheet3：