{"width":"100%","blog_title":"Remrin\u306epython\u653b\u7565\u65e5\u8a18","image_url":null,"author_name":"rare_Remrin","blog_url":"https://python-remrin.hatenadiary.jp/","type":"rich","version":"1.0","provider_url":"https://hatena.blog","published":"2017-05-22 13:14:25","description":"NumPy\u306e\u6570\u3048\u4e0a\u3052(\u8981\u7d20\u306e\u30ab\u30a6\u30f3\u30c8)\u306b\u3064\u3044\u3066\u3002 0,1\u306e\u307f\u306e\u30c7\u30fc\u30bf\u304b\u30891\u30840\u306e\u500b\u6570\u3092\u6570\u3048\u308b\u65b9\u6cd5 import numpy as np a1 = np.array([0, 1, 1, 0, 1, 0, 0, 0]) # 1\u306e\u500b\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u4f8b print(np.count_nonzero(a1)) # 3 print(a1.sum()) # 3 print(len(np.where(a1 != 0)[0])) # 3 # 0\u306e\u500b\u6570\u3092\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u4f8b print(np.count_nonzero(1 - a1)) # 5 print(len(a1) - a1.sum()) # 5 0\u30681\u3092\u540c\u6642\u306b\u2026","height":"190","provider_name":"Hatena Blog","title":"NumPy\u306e\u4f7f\u3044\u65b9\uff08\uff11\uff19\uff09\u3000\u6570\u3048\u4e0a\u3052","categories":["numpy","python","\u30e9\u30a4\u30d6\u30e9\u30ea"],"url":"https://python-remrin.hatenadiary.jp/entry/2017/05/22/131425","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpython-remrin.hatenadiary.jp%2Fentry%2F2017%2F05%2F22%2F131425\" title=\"NumPy\u306e\u4f7f\u3044\u65b9\uff08\uff11\uff19\uff09\u3000\u6570\u3048\u4e0a\u3052 - Remrin\u306epython\u653b\u7565\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/rare_Remrin/"}