fixing some bugs in endpoints ( Issue: #367 ) & Adding Endpoint to calculate Capital Asset Pricing Model (CAPM) ( Issue: #368)

[Codeansh]

Issue #367, bugs are removed.
Issue #368, Add Endpoint to calculate Capital Asset Pricing Model (CAPM).

[ighoshsubho]

Everything looks ok, just confirm me with this sharpe_ratio.

[Codeansh]

Actually in the "helpers/functions.py" file function "sharpe_ratio" was defined twice ( at line 248 and line 1774 ). Due to the duplicate function, the endpoint was not working as expected. The first function is working correctly so I removed the duplicate function ( at line 1774 ). Now the endpoint is working correctly.

[ighoshsubho]

Actually in the "helpers/functions.py" file function "sharpe_ratio" was defined twice ( at line 248 and line 1774 ). Due to the duplicate function, the endpoint was not working as expected. The first function is working correctly so I removed the duplicate function ( at line 1774 ). Now the endpoint is working correctly.

Sounds good! Congrats @Codeansh, your PR got merged! Keep contributing like this in GSSOC'23

[Codeansh]

Actually in the "helpers/functions.py" file function "sharpe_ratio" was defined twice ( at line 248 and line 1774 ). Due to the duplicate function, the endpoint was not working as expected. The first function is working correctly so I removed the duplicate function ( at line 1774 ). Now the endpoint is working correctly.

Sounds good! Congrats @Codeansh, your PR got merged! Keep contributing like this in GSSOC'23

Thanks @ighoshsubho.