I truncated the data in the code I posted to reduce the number of uninteresting lines. The '...' is an ellipsis and is used to indicate missing data. If you substitute the data from Re^2: find shortest path for each query from a CSV file the code runs correctly without warnings.

True laziness is hard work

In reply to Re^3: find shortest path for each query from a CSV file by GrandFather
in thread find shortest path for each query from a CSV file by zing

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