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

Hello Guys, How are you all? Hope You all Are Fine. Today Whenever I am trying to open xls file I am facing following error some times. However Sometimes its Working fine Excel file format cannot be determined, you must specify an engine manually in python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

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

Whenever I am trying to open xls file I am facing following error some times. However Sometimes its Working fine.

Excel file format cannot be determined, you must specify an engine manually.

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

  1. How To Solve Excel file format cannot be determined, you must specify an engine manually Error?

    To Solve Excel file format cannot be determined, you must specify an engine manually Error I am trying to open my file1 and my file1 is opened in MS excel So that whenever you are trying to open Already Opened File then you will face this error. To solve this error Just close opened file and now Try to open with your python code and your error will be solve.

  2. Excel file format cannot be determined, you must specify an engine manually.

    To Solve Excel file format cannot be determined, you must specify an engine manually Error I am trying to open my file1 and my file1 is opened in MS excel So that whenever you are trying to open Already Opened File then you will face this error. To solve this error Just close opened file and now Try to open with your python code and your error will be solve.

Solution 1: define engine

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: Close Opened File

I am trying to open my file1 and my file1 is opened in MS excel So that whenever you are trying to open Already Opened File then you will face this error.

To solve this error Just close opened file and now Try to open with your python code and your error will be solve.

Summary

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you?

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