.map(...) transformation

The map(f) transformation returns a new RDD formed by passing each element through a function, f.

Look at the following code snippet:

# Use map() to extract out the first two columns
airports.map(lambda c: (c[0], c[1])).take(5)

This will produce the following output:

# Output
[(u'City', u'State'),  
 (u'Abbotsford', u'BC'),  
 (u'Aberdeen', u'SD'),

 (u'Abilene', u'TX'),  
 (u'Akron', u'OH')]