np.arange(2) gives array([0, 1]), so only two values. If you try to plot three values (in y1 or y2) against this, that won’t work and it will throw the ValueError (telling you exactly this): Try using np.arange(3).
The problem arises due to the perfect correlation between the two series in your data. From the traceback, you can see, that internally a wald test is used to compute the maximum likelihood estimates for the parameters of the lag-time series. To do this an estimate of the parameters covariance matrix (which is then near-zero) … Read more
This error is caused by: Indexing is out of bounds here most probably because there are less than 19 columns in your Dataset, so column 18 does not exist. The following code you provided doesn’t use Y at all, so you can just comment out this line for now.
If you only want one item’s count, use the count method: Important Note regarding count performance Don’t use this if you want to count multiple items. Calling count in a loop requires a separate pass over the list for every count call, which can be catastrophic for performance. If you want to count all items, or even just multiple items, use Counter, … Read more
this turns the recursion in to a loop:
Variables declared inside the class definition, but not inside a method are class or static variables: As @millerdev points out, this creates a class-level i variable, but this is distinct from any instance-level i variable, so you could have This is different from C++ and Java, but not so different from C#, where a static member can’t be accessed using … Read more
Normally Python throws NameError if the variable is not defined: However, you’ve managed to stumble upon a name that already exists in Python. Because dict is the name of a built-in type in Python you are seeing what appears to be a strange error message, but in reality it is not. The type of dict is a type. All types are objects in … Read more
From the error, I infer that referenceElement is a dictionary (see repro below). A dictionary cannot be hashed and therefore cannot be used as a key to another dictionary (or itself for that matter!). You probably meant either for element in referenceElement.keys() or for element in json[‘referenceElement’].keys(). With more context on what types json and referenceElement are and what they contain, we will be … Read more
If I understand right, you want something like this: (Here I convert the values to numbers instead of strings containing numbers. You can convert them to “1” and “0”, if you really want, but I’m not sure why you’d want that.) The reason your code doesn’t work is because using [‘female’] on a column (the second ‘female’ in your w[‘female’][‘female’]) doesn’t mean “select … Read more
I’m trying to create a simple Caesar Cipher function in Python that shifts letters based on input from the user and creates a final, new string at the end. The only problem is that the final cipher text shows only the last shifted character, not an entire string with all the shifted characters. Here’s my … Read more