看過(guò)實(shí)例后做起來(lái)比較容易

我的成果

Paste_Image.png

我的代碼

cates_list=[]
for i in item_infos.find():
    cates_list.append(i['cates'][2])
cates_index=list(set(cates_list))
print(cates_index)

cate_times=[]
for index in cates_index:
    cate_times.append(cates_list.count(index))
print(cate_times)

def cate_posts(types):
    length=0
    if length <= len(cates_index):
        for cate,times in zip(cates_index,cate_times):
            data={
                'name':cate,
                'data':[times],
                'type':types
            }
            yield data
            length+=1

series=[data for data in cate_posts('column')]
charts.plot(series,show='inline',options=dict(title=dict(text='北京各類目二手物品發(fā)帖量')))

總結(jié)

• 簡(jiǎn)單統(tǒng)計(jì)一下各個(gè)類目的發(fā)帖量