How to write a code to open and read text file by clicking on the "text file"

[kavindu]

I'm a windows user. The notepad is the default program for.txt files. I need to write a code to open and read a text file by clicking on the text file when the python file has been selected as the default program for the text files.How to do that

python v3.7

[DeaD_EyE]

You want to associate text files extension with a Python program?
This is possible, but I think it's not a good idea to open all text files generally with Python.

1. Associate the extension .txt to 'py C:\windows\your_script.py'
   
2. Clicking now on a .txt file should call following: 'py C:\windows\your_script.py filename.txt'
   

Then you read with sys.argv[1] the first argument from the commandline.
sys.argv[0] is the python-script.

Then you can do what you want with the path.

[Larz60+]

Python doesn't care what the file is named, if it contains text, as does '.py' files, that means you can perform text base instructions on it.

Here's a good writeup: https://hackernoon.com/determining-file-...e7b18d4fc4

[kavindu]

Thank you Dead_Eye. I wrote a code just as he said and I selected my python script as the default for txt files.
this is my python code

import sys
file=open(sys.argv[1],"r")
print(file.read())

When I dragged a txt file and dropped it over my python script, the python script reads the text file successfully. But when I double clicked on the txt file, then it shows following error msg

Error:
C:Users\Kavindu\Documents\python_workspace\a2.txt is not a valid Win32 application

What is the reason for this error msg, and how to solve this problem. I need to open txt files with my python script by clicking on text files

plz can someone help me with this

[buran]

DeaD_EyE provided one option, but also pointed the drawback
one alternative would be to add entry (shortcut to your python script e.g c:\python37\python.exe c:\path_to\yourscript.py) in the Send To right-click menu. So you can right click on the text file and select SendTo->your python script.

https://www.howtogeek.com/howto/windows-...d-to-menu/