This may help clarify some of the confusion around the technical indicators. In the Quantopian IDE there is a difference (though not intentionally) between 'import talib' and using the 'ta.' notation.
When you do "import talib", you are referencing the open-sourced python library in your algorithm. This is the recommended approach and will return the correct values in your code.
When we first started, we created a Quantopian-specific wrapper, called "ta." to help use the talib library on Quantopian functions. However, as we've grown and built new functions, it's shown some holes and we're not working to support it. In fact, we're working to deprecate this.
For your strategy, use talib.RSI - this will return the values you're expecting.
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