I would like to see a stream processing library ported to pure Python. For example, Java 8 Stream API, Scala Stream API, Spark RDD API, jOOL API. They're all si

I would like to see a stream processing library ported to pure Python. For example, Java 8 Stream API, Scala Stream API, Spark RDD API, jOOL API. They're all similar. That is, I would like to have an iterator in Python in which I could do: from statistics import mean from niceportedlib import Stream salaries = Stream([]) # Some data here mean_salary_by_department = salaries.group_by(lambda v: v['department']).map_values(statistics.mean) Pandas does help, but is not pure Python (has native dependencies).