小编Ste*_*rer的帖子

我有一个很大的csv，文件，我想获取其中的所有值，这些值存储在我知道名称的特定列中。

不知何故我不知道该怎么做，但我想我很接近:(

import codecs
import csv
import json
import pprint
import re


FIELDS = ["name", "timeZone_label", "utcOffset", "homepage","governmentType_label", "isPartOf_label", "areaCode", "populationTotal", 
      "elevation", "maximumElevation", "minimumElevation", "populationDensity", "wgs84_pos#lat", "wgs84_pos#long", 
      "areaLand", "areaMetro", "areaUrban"]

index=[]

with open('/Users/stephan/Desktop/cities.csv', "r") as f:
    mycsv=csv.reader(f)
    results=[]
    headers=None
    for row in mycsv:
        for i, col in enumerate(row):
            if col in FIELDS:
                index.append(i)
        print row[i]    
print index             

我的列表索引，我认为是正确的，并为我提供了正确的值（列索引）

我必须在代码中添加些什么才能使其正常工作？

我想编写一个简单的查询，为我提供拥有最多关注者、时区为巴西且已发推文 100 次或以上的用户：

这是我的台词：

pipeline = [{'$match':{"user.statuses_count":{"$gt":99},"user.time_zone":"Brasilia"}},
            {"$group":{"_id": "$user.followers_count","count" :{"$sum":1}}},
            {"$sort":{"count":-1}} ]

我根据练习题改编了它。

This was given as an example for the structure :
    {
    "_id" : ObjectId("5304e2e3cc9e684aa98bef97"),
    "text" : "First week of school is over :P",
    "in_reply_to_status_id" : null,
    "retweet_count" : null,
    "contributors" : null,
    "created_at" : "Thu Sep 02 18:11:25 +0000 2010",
    "geo" : null,
    "source" : "web",
    "coordinates" : null,
    "in_reply_to_screen_name" : null,
    "truncated" : false,
    "entities" : {
        "user_mentions" : [ ],
        "urls" : [ ],
        "hashtags" …