Using pandas with the openpyxl engine I want to open an excel woorkbook and add a sheet.
Because, the sheets are growing and getting quit big I want to create a new sheet without reading all the other sheet.
So instead of xlsxwriter, I did start using openpyxl, however I get the following issue that the file gets damaged and needs to recovered by excel.
After that, when I run it a second time, I get the python error that the excel file is 'raise BadZipFile("File is not a zip file")'.
This my test code:
import openpyxl
import pandas
from pandas import ExcelWriter
from pandas import ExcelFile
from openpyxl import Workbook
from openpyxl import load_workbook
sheet1 = 'sheet1'
sheet2 = 'sheet2'
if os.path.exists(filename):
workbook = openpyxl.load_workbook(filename)
else:
workbook = Workbook()
writer = pandas.ExcelWriter(filename, engine='openpyxl')
writer.book = workbook
df_1.to_excel(writer, sheet_name=sheet1)
writer.save()
writer.close()
time.sleep(2) # to give it some time. But doesn't help :(
if os.path.exists(filename):
workbook = openpyxl.load_workbook(filename)
else:
workbook = Workbook()
writer = pandas.ExcelWriter(filename, engine='openpyxl')
writer.book = workbook
df_2.to_excel(writer, sheet_name=sheet2)
writer.save()
writer.close()
Any suggestions how to solve this? Or do I miss something?
btw, excel 365 - 16.46 macOS
Related
here is my code:
import openpyxl as op
from openpyxl import Workbook
from openpyxl import load_workbook
from openpyxl import worksheet
path = ...
op.load_workbook(path)
wb = Workbook()
ws2 = wb.create_sheet('Sheet2')
wb.save(filename = 'NameOfTheFile.xlsx')
Now everything works, except saving the file, when I add:
print(wb.sheetnames)
it does print out the Sheet2 I just added, but for some reason when I go to the documents where the file is, it does not update it, that sheet is nowhere to be found.
I am trying to convert a CSV file to an existing excel file named 'bench_configuration'.Inside this Excel there are few sheets. I want to convert the CSV file into a sheet named 'Setup_Loss' (which is already inside the EXCEL file)
I tried to use :
read_file = pd.read_csv('new_names.csv',sep='\t')
read_file.to_excel('bench_configuration.xlsx', index=None, header=True)
But its opening a new Excel file.
You need to have an instance of ExcelWriter and use it to write and save the content
import pandas as pd
from openpyxl import load_workbook as lw
workbook = lw('bench_configuration.xlsx')
writer = pd.ExcelWriter('bench_configuration.xlsx', engine='openpyxl', mode='a')
writer.book = workbook
writer.sheets = dict((ws.title, ws) for ws in workbook.worksheets)
read_file = pd.read_csv('new_names.csv',sep='\t')
read_file.to_excel(writer, "Setup_Loss")
writer.save()
I am trying to open and format a specific Excel worksheet. However I am having trouble trying to find out how to look at a specific worksheet.
The code I'm trying to use to open the workbook and go to a specific worksheet and then change the font for specific cells is:
from openpyxl import Workbook
def applyValidations(path,tabname):
workbook = Workbook(path)
worksheet = workbook[tabname]
c = worksheet['A1:A5']
c.font = Font(size=22)
The error I'm getting is:
KeyError: 'Worksheet Department Data does not exist.'
Department Data is the name of the worksheet which does exist in the workbook.
Here's some code I use regularly with openpyxl, which may solve your Q:
from openpyxl import load_workbook
wb = load_workbook(filename=data_file, read_only=True)
ws = wb.active
print(wb.sheetnames)
I am writing a dataframe to a range of Excel file in a certain tab, but after saving the file, I see that the Excel file has become unusable. Could anyone suggest a solution?
import openpyxl as pyx
df3_xmax= df3.iloc[0]
wb = pyx.load_workbook(dst)
xl_writer = pd.ExcelWriter(dst, engine='openpyxl')
xl_writer.book = wb
xl_writer.sheets = {ws.title:ws for ws in wb.worksheets}
df3_xmax.to_excel(xl_writer, 'shname', index=False, header=False, startcol=3, startrow=7)
xl_writer.save()
I want to do something like this:
import openpyxl as x
wb = x.load_workbook(filename)
# do some edit to the workbook
wb.save(filename)
The file specified by the filename is opening in Excel. Excel is locking the file so I will get permission denied error running the above code. Is there a way to edit/save it?
from openpyxl import load_workbook
ifile = 'Whales.xlsx'
wb = load_workbook(filename=ifile)
# do some edit to the workbook
wb.save(ifile)