[Fixed] Excel file format cannot be determined, you must specify an engine manually

Today We are Going To Solve Excel file format cannot be determined, you must specify an engine manually in Python. Here we will Discuss All Possible Solutions and How this error Occurs So let’s get started with this Article.

How to Fix Excel file format cannot be determined, you must specify an engine manually Error?

Solution 1 : Define engine

Here to solve this error you have to just define engine Just like below.

if file_extension == 'xlsx':
    df = pd.read_excel(file.read(), engine='openpyxl')
elif:
    df = pd.read_csv(file.read())

Solution 2 : Read the excel file

First of all, just use xlrd.

pip install xlrd

Then install pandas

pip install pandas

Now read the excel file and it will remove the error.

import pandas as pd

df = pd.read_excel("filesFolder/excelFile.xls", engine='xlrd')

Conclusion

So these were all possible solutions to this error. I hope your error has been solved by this article. In the comments, tell us which solution worked? If you liked our article, please share it on your social media and comment on your suggestions. Thank you.

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