Introductory Examples すべての章でiPythonのインタラクティブシェルを利用している。 起動は$ ipython --pylabで行う。 pandasのバージョン0.10.0だとapply関数のバグがあるので最新のを入れましょう。 usa.gov data from bit.ly 元データがJSON形式なのでこれをパースして取り込む。 import json path = "data.txt" records = [json.loads(line) for line in open(path)] time_zones = [rec["tz"] for rec in records if "tz" in rec] from collections import Counter counts = Counter(time_zones) """ counts.most_c
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