JSON object must be str, bytes or bytearray, not dict

json.loads take a string as input and returns a dictionary as output. json.dumps take a dictionary as input and returns a string as output. With json.loads({“(‘Hello’,)”: 6, “(‘Hi’,)”: 5}), You are calling json.loads with a dictionary as input. You can fix it as follows (though I’m not quite sure what’s the point of that):

pandas groupby sort within groups

What you want to do is actually again a groupby (on the result of the first groupby): sort and take the first three elements per group. Starting from the result of the first groupby: We group by the first level of the index: Then we want to sort (‘order’) each group and take the first … Read more

how to read json object in python

You should pass the file contents (i.e. a string) to json.loads(), not the file object itself. Try this: There’s also the json.load() function which accepts a file object and does the f.read() part for you under the hood.

Can’t get Python to import from a different folder

I believe you need to create a file called __init__.py in the Models directory so that python treats it as a module. Then you can do: You can include code in the __init__.py (for instance initialization code that a few different classes need) or leave it blank. But it must be there.

Rotating a two-dimensional array in Python

Consider the following two-dimensional list: Lets break it down step by step: This list is passed into zip() using argument unpacking, so the zip call ends up being the equivalent of this: Hopefully the comments make it clear what zip does, it will group elements from each input iterable based on index, or in other words it groups the columns.