I want to make a script that writes a certain text to the A1 cell of every excel file inside a folder. I'm not sure how to get Python to open every file one by one, make changes to A1, and then overwrite save the original file.
import os
import openpyxl
os.chdir('C:/Users/jdal/Downloads/excelWorkdir')
folderList = os.listdir()
for file in in os.walk():
for name in file:
if name.endswith(".xlsx" and ".xls")
wb = openpyxl.load_workbook()
sheet = wb.get_sheet_by_name('Sheet1')
sheet['A1'] = 'input whatever here!'
sheet['A1'].value
wb.save()
I see following errors in your code:
You have an error in .endswith
, it should be
name.endswith((".xlsx",".xls"))
ie it needs to be feed with tuple
of allowed endings.
Your if
lacks :
at end and your indentation seems to be broken.
You should deliver one argument to .load_workbook
and one argument to .save
, ie name of file to read/to write.
I would iterate through the folder and use pandas to read the files as temporary data frames. From there, they are easily manipulable.
Assuming you are in the relevant directory:
import pandas as pd
import os
files = os.listdir()
for i in range(len(files)):
if files[i].endswith('.csv'):
# Store file name for future replacement
name = str(files[i])
# Save file as dataframe and edit cell
df = pd.read_csv(files[i])
df.iloc[0,0] = 'changed value'
# Replace file with df
df.to_csv(name, index=False)
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