chicago | City Energy Map Deployment for Chicago
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kandi X-RAY | chicago Summary
City Energy Map Deployment for Chicago
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QUESTION
Problem
I have a large JSON file (~700.000 lines, 1.2GB filesize) containing twitter data that I need to preprocess for data and network analysis. During the data collection an error happend: Instead of using " as a seperator ' was used. As this does not conform with the JSON standard, the file can not be processed by R or Python.
Information about the dataset: Every about 500 lines start with meta info + meta information for the users, etc. then there are the tweets in json (order of fields not stable) starting with a space, one tweet per line.
This is what I tried so far:
- A simple
data.replace('\'', '\"')
is not possible, as the "text" fields contain tweets which may contain ' or " themselves. - Using regex, I was able to catch some of the instances, but it does not catch everything:
re.compile(r'"[^"]*"(*SKIP)(*FAIL)|\'')
- Using
literal.eval(data)
from theast
package also throws an error.
As the order of the fields and the legth for each field is not stable I am stuck on how to reformat that file in order to conform to JSON.
Normal sample line of the data (for this options one and two would work, but note that the tweets are also in non-english languages, which use " or ' in their tweets):
...ANSWER
Answered 2021-Jun-07 at 13:57if the '
that are causing the problem are only in the tweets and desciption
you could try that
QUESTION
I will try to explain what I am doing with an example, say I am building a weather client. The browser sends a message over websocket, eg:
...ANSWER
Answered 2021-Jun-12 at 17:13The simplest way to do this is like you mentioned moving the reading outside of the loop in a separate task. In this paradigm you'll need to update a local variable with the latest data, making your code look something like this:
QUESTION
I am looking at the following json file:
...ANSWER
Answered 2021-Jun-10 at 00:31Instead of this:
QUESTION
I'm new to Spring Data JDBC and create a Customer aggregate with two Address values using Spring-Boot 2.5.0, Java 11 and Lombok (code examples simplified).
I have one Customer entity (aggregate root) and one Address value object
...ANSWER
Answered 2021-Jun-08 at 15:09You can put a @Column
annotation on one or both attributes, specifying different columns to use for the backreference to Customer
.
For example:
QUESTION
I am parsing some interestingly formatted data from https://raw.githubusercontent.com/QuantConnect/Lean/master/Data/market-hours/market-hours-database.json
It contains a snippet (removing some days) as below:
...ANSWER
Answered 2021-May-25 at 05:29Is there a preferred way to deal with a LocalTime that represents a 24 hours span?
It's worth taking a step back and separating different concepts very carefully and being precise. A LocalTime
doesn't represent a 24 hour span - it's just a time of day. Two LocalTime
values could effectively represent a 24 hour span without reference to a specific date, yes.
If you can possibly change your JSON to use 00:00:00
, and then treat a "start==end" situation as being the full day, that's what I'd do. That does mean, however, that you can never represent an empty period.
Now, in terms of whether you should use a start and duration... that really depends on what you're trying to model. Are you trying to model a start time and an end time, or a start time and a duration? So far you've referred to the whole day as "a 24 hour span" but that's not always the case, if you're dealing with time zones that have UTC offset transitions (e.g. due to daylight saving time).
Transitions already cause potential issues with local intervals like this - if you're working on a date where the local time "falls back" from 2am to 1am, and you've got a local time period of (say) 00:30 to 01:30, then logically that will be "true" for an hour and a half of the day:
- 00:00-00:30: False
- 00:30-01:30 (first time): True
- 01:30-02:00 (first time): False
- 01:00-01:30 (second time): True
- 01:30-02:00 (second time): False
- 02:00-00:00 (next day): False
We don't really know what you're doing with the periods, but that's the sort of thing you need to be considering... likewise if you represent something as "00:00 for 24 hours" how does that work on a day which is only 23 hours long, or one that is 25 hours long? It will very much depend on exactly what you do with the data.
I would adopt a process of:
- Work out detailed requirements, including what you want to happen on days with UTC offset transitions in the specific time zone (and think up tests at this stage)
- Extract the logical values from those requirements in terms of Noda Time types (with the limitation that no, we unfortunately don't support 24:00:00 as a
LocalTime
) - Represent those types in your JSON as closely as possible
- Make your code follow your requirements documentation as closely as possible, in terms of how it handles the data
QUESTION
I am new to TypeScript. I have the following interface defined:
...ANSWER
Answered 2021-Jun-07 at 22:25I would do
QUESTION
I am trying to reduce the amount of data returned from my php curl request to just that which is necessary but am struggling to access the data from the inner arrays/objects.
I'm currently receiving an error that the indexes within the $weatherdata are undefined.
Warning: Illegal string offset 'current' in projectname on line 21
This is the data that's returned:
...ANSWER
Answered 2021-Jun-06 at 16:42Your foreach
is causing this error. You are looping through the resulting array
When you decode the above json using json_decode($result, true)
, the resulting array would be like
QUESTION
In the following Python 3 code, the correct value is written into the daysSchedule
but when iterating to the next value.
ANSWER
Answered 2021-Jun-03 at 06:59All the trouble came from the way you use classes. Please, note the difference:
This:
QUESTION
I have the following dict shown below that was created from a GET request. I want to be iterate through this dict to extract all the user emails only. I dont want the key with the value, just a new list of email addresses. How can I most efficiently loop through a long dict and pull out just the value of the key 'email'? I have tried using the json.load() fucntion, but run into problems with the data type.
...ANSWER
Answered 2021-Jun-02 at 21:35QUESTION
In this University Database:
...ANSWER
Answered 2021-Mar-16 at 16:03Gag. This would seem to answer the question:
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