Question

我有一个包含这些行的文本文件，例如

2017-03-14 10:33:56.661 +0800, Number of child: 898
2017-03-14 10:33:56.661 +0800, Volume of water: 86.75
2017-03-14 10:33:56.661 +0800, Size of field: 99.58
2017-03-14 10:34:01.672 +0800, Number of Dog: 779
2017-03-14 10:34:01.672 +0800, Number of child: 898
2017-03-14 10:34:01.672 +0800, Volume of water: 86.75
2017-03-14 10:34:01.672 +0800, Size of field: 99.58
2017-03-14 10:34:06.677 +0800, Number of Dog: 789
....
....

我想使用mongodb和mongoalchemy存储这些数据。我希望它看起来像这样

{
"_id" : ObjectId("58d8e7e2a0bae63d30e8601a"),
"Timestamp" : ISODate("2017-03-14T10:33:56.661Z"),
"Data": "Number of child"
"Value" : 898,
"Timezone" : "+0800"
}
{
"_id" : ObjectId("58d8e7e2a0bae63d30e8601a"),
"Timestamp" : ISODate("2017-03-14T10:33:56.661Z"),
"Data": "Volume of water"
"Value" : 86.75,
"Timezone" : "+0800"
}
{...
....
....
}

到目前为止我的代码

model.py

from mongoalchemy.document import Document
from mongoalchemy.fields import *

class the_data(Document):
    Timestamp = DateTimeField()
    Timezone = StringField()
    Data = StringField()
    Value = FloatField()

savetodb.py

from mongoalchemy.session import Session
from model import text_data, html_data
import datetime
import os

path = "all_files/"

def save_to_db():
    dir_path = os.listdir(path)
    session = Session.connect('mockdb')  # mongodb's database name
    session.clear_collection(the_data)
    for file in dir_path:
        if file.endswith(".txt"):
            f = open(path + file, "r")
            for line in f:
                word = ["Number of child", "Number of Dog ", "Volume of Water", "Size of field"]
                if word[0] in line:
                    timestamp = line[0:23].strip()
                    t = datetime.datetime.strptime(timestamp, "%Y-%m-%d %H:%M:%S.%f")
                    tzone = [i for i in line.split() if i.startswith("+")]
                    timezone = ''.join(tzone)
                    data_child = line.split(": ", 1)[0]
                    num_child = line.split(": ", 1)[1]
                    numchild = float(num_child)
                    data_save = the_data(Timestamp=t,
                                          Timezone=timezone,
                                          Data=data_child,
                                          Value=numchild)
                    session.save(data_save)

                elif word[1] in line:
                    timestamp = line[0:23].strip()
                    t = datetime.datetime.strptime(timestamp, "%Y-%m-%d %H:%M:%S.%f")
                    tzone = [i for i in line.split() if i.startswith("+")]
                    timezone = ''.join(tzone)
                    data_dog = line.split(": ", 1)[0]
                    num_dog = line.split(": ", 1)[1]
                    numdog = float(num_child)
                    data_save = the_data(Timestamp=t,
                                          Timezone=timezone,
                                          Data=data_dog,
                                          Value=numdog)
                    session.save(data_save)                        

                elif word[2] in line:
                    timestamp = line[0:23].strip()
                    t = datetime.datetime.strptime(timestamp, "%Y-%m-%d %H:%M:%S.%f")
                    tzone = [i for i in line.split() if i.startswith("+")]
                    timezone = ''.join(tzone)
                    data_water = line.split(": ", 1)[0]
                    vol_water = line.split(": ", 1)[1]
                    volwater = float(num_child)
                    data_save = the_data(Timestamp=t,
                                          Timezone=timezone,
                                          Data=data_water,
                                          Value=volwater)
                    session.save(data_save)

                elif word[3] in line:
                    timestamp = line[0:23].strip()
                    t = datetime.datetime.strptime(timestamp, "%Y-%m-%d %H:%M:%S.%f")
                    tzone = [i for i in line.split() if i.startswith("+")]
                    timezone = ''.join(tzone)
                    data_field = line.split(": ", 1)[0]
                    size_field = line.split(": ", 1)[1]
                    sizefield = float(num_child)
                    data_save = the_data(Timestamp=t,
                                          Timezone=timezone,
                                          Data=data_field,
                                          Value=savefield)
                    session.save(data_save)



save_to_db()

我将文本文件保存在名为all_files

的子文件夹下

我在上面运行脚本，这就是我得到的内容

Traceback (most recent call last):
  File "tasks.py", line 88, in <module>
save_to_db()
  File "tasks.py", line 38, in save_to_db
Value=numchild)
  File "/Users/Fang/workspace/test_celery3/celery3-env/lib/python2.7/site-packages/mongoalchemy/document.py", line 230, in __init__
raise ExtraValueException(k)
mongoalchemy.exceptions.ExtraValueException: Data

错误是什么意思？我错过了剧本中的内容吗？在此，我是否正确的方向将数据妥善存储在数据库中？

其他信息：运行脚本后，甚至没有数据库mockdb。

感谢您的帮助。

如何在mongodb中将字符串保存为float或integer？

0 个答案: