The documentation is beautifully written and perfect for learning, but it doesn't support the quick-fire referencing I, and I presume the other detractors, have grown to expect.

Contrast the first Google result for "python dictionary" [1] and "java hashmap" [2]. The Python result tells you about every data structure and does so in a story, the Java one gives you what you want and little more.

[1] : http://docs.python.org/2/tutorial/datastructures.html

[2] : http://docs.oracle.com/javase/6/docs/api/java/util/HashMap.h...