get_all_tags.py

def get_all_article():
    # initialize
    article_api   = "https://alis.to/api/articles/recent?limit=100&page=%d"
    result          = []
    page           = 1
    # データ取得
    while True:
        try:
            raw_article_data  = urlopen(article_api % page).read().decode("utf-8") 
            json_article_data  = json.loads(raw_article_data)                    
            articles_data        = json_article_data["Items"]
            result.extend(articles_data)
            page += 1
        except:
            break
    return result

def get_all_tags(all_articles):
	all_tags = []
	for article in all_articles:
	    if "tags" in article.keys():
		tags = article["tags"]
		all_tags.extend(tags)
	all_tags =list( set(all_tags))
	return all_tags
	

if __name__ == '__main__':	
	all_articles = get_all_article()
	all_tags     = get_all_tags(all_articles)
	print(len(all_tags)
	for tag in all_tags:
	      print(tag)