Update setup.py get_version() is called twice unnecessarily

[subhshrivastava29918]

In the setup() call, get_version() is invoked twice — once for version= and once for download_url=. This means the file is opened and parsed twice, which is inefficient and fragile (if the file changes between calls, you'd get inconsistent results)

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[subhshrivastava29918]

That is there and I have corrected in this code a