Pandas: DataReader in combination with ISIN identification
Forget about Python. There is absolutely no way to convert an ISIN to a Ticker Symbol. You have completely misunderstood the wikipedia page.
I'm trying to compute some portfolio statistics using Python Pandas, and I am looking for a way to query stock data with DataReader using the ISIN (International Securities Identification Number). 
However, as far as I can see, DataReader is not compatible with such ids, although both YahooFinance and GoogleFinance can handle such queries.
How can I use DataReader with stock ISINs?