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Example 3-13 TypeError #3
Description
In the process of putting together an IPython Notebook with convenient worked examples from Learning Spark, I found a simple python semantic error.
Example 3-15 says:
print "Input had " + badLinesRDD.count() + " concerning lines"
which results in
TypeError Traceback (most recent call last)
<ipython-input-10-078b22c97d4b> in <module>()
----> 1 print "Input had " + badLinesRDD.count() + " concerning lines"
2 print "Here are 10 examples:"
3 for line in badLinesRDD.take(10):
4 print line
TypeError: cannot concatenate 'str' and 'int' objects
It should say something more like this:
print "Input had %d worrisome lines" % (badLinesRDD.count())
I made a gist of an ipython notebook showing the problem and the fix, with simple worked examples, which you can see (and download) here:
http://nbviewer.ipython.org/gist/nealmcb/b6d989a83adddcdd459f
I suggest including such notebooks in future editions.
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