One of the most important elements of Python is its expandability. Various third-party libraries can add a wide range of specialized functionality to the language. And this is perhaps most readily apparent in areas related to math and data science. NumPy and Pandas are particularly important for anyone who needs to work with large amounts […]

## How To Fix The NumPy Error Message: valueerror: all the input array dimensions except for the concatenation axis must match exactly

If you’re looking at this particular Numpy error, your code is probably trying to create a concatenated array using the Numpy vstack or hstack method. You’re seeing this error because at least of the input array(s) that you are feeding into the append function is of different length. And since you can’t cleanly match an […]

## NumPy Error Message: ‘numpy.float64’ object is not callable

NumPy adds a lot of extra math related functionality to Python. Sometimes this is a fairly straightforward addition. For example, the digitize function’s benefits in reinforcement learning are readily apparent. But the benefits of other elements and their relationship with native Python functionality can be more nebulous. A ‘numpy.float64’ object is not callable error is […]

## NumPy Error Message: numpy.ndarray object has no attribute ‘append’

Python’s flexibility is one of its greatest features. It’s flexible enough that we can easily improve some of its most basic components. However, there are instances where this flexibility can make things a little confusing. And that’s the case for instances where we see a ‘numpy.ndarray’ object has no attribute ‘append’ error. What is this […]

## NumPy Error Message: operands could not be broadcast together with shapes

NumPy extends Python’s basic mathematical functionality in a number of different ways. The additional functionality makes Python a lot more powerful. However, using NumPy also means getting used to a lot of new functions. We often even need to approach objects in a very different way than we might expect. Error messages that seem contrary […]

## NumPy Error Message: typeerror: unhashable type: numpy.ndarray

NumPy is one of the most useful additions to the Python language. It’s an important library that essentially elevates Python into a platform that is capable of advanced mathematical data type functions. However, there are instances where NumPy’s status as an add-on rather than something integral to Python is readily apparent. For example, a typeerror: […]

## NumPy Error Message: runtimewarning: invalid value encountered in double_scalars

NumPy is one of the best ways to augment Python’s mathematical capabilities. However, advanced math can come with advanced problems as well. We can see this especially clearly in a runtimewarning: invalid value encountered in doublescalars error message. What is this error? The error message question might seem overly complex at first glance. But we […]

## NumPy Error Message: importerror: missing required dependencies numpy

Python provides us with a great mix of user-friendly package management and clean linguistic archetecture. Python at its best can truly live up to the promise of multiplatform design. But every now and then we face issues related to python’s tight integration of language, libraries and tools. This is particularly true when we look at […]

## NumPy Error Message: numpy.ndarray object is not callable

If you’re using NumPy then it’s probably just a matter of time until you see a ‘numpy.ndarray’ object is not callable error typeerror. It’s a fairly common error that’s related to the basic syntax of python, when using a dataframe or other data type. Thankfully it’s also quite easy to fix this error within your […]

## NumPy Error Message: only integer scalar arrays can be converted to a scalar index

If you are not getting occasional error messages, then you are not actually programming. Unfortunately getting your messages is part of programming, but it can be considered a sign that you are actually programming. Numpy, Python’s scientific library can produce some rather unique error messages if you are not careful. What is this error? The […]