TypeError; Must use key word argument or key function in python 3.x
Looks like the problem is in this line. The key callable should take only one argument. Try:
python-3.x
How to save a dictionary to a file?
Python has the pickle module just for this kind of thing. These functions are all that you need for saving and loading almost any object: In order to save collections of Python there is the shelve module.
How to return dictionary keys as a list in Python?
Try list(newdict.keys()). This will convert the dict_keys object to a list. On the other hand, you should ask yourself whether or not it matters. The Pythonic way to code is to assume duck typing (if it looks like a duck and it quacks like a duck, it’s a duck). The dict_keys object will act like a list for most purposes. … Read more
python mpl_toolkits installation issue
It is not on PyPI and you should not be installing it via pip. If you have matplotlib installed, you should be able to import mpl_toolkits directly:
What is the meaning of ‘for _ in range()
When you are not interested in some values returned by a function we use underscore in place of variable name . Basically it means you are not interested in how many times the loop is run till now just that it should run some specific number of times overall.
TypeError: cannot unpack non-iterable NoneType object
I think your X_train, y_train, X_test, y_test are defined inside your load_mnist_imagesfunction, and are thus not defined for your load_dataset function. You should de-indent your 5 lines from X_train = … to return X_train, … and your code might work better then.
Dlib installation error?
Here is how I solved the same issue. Make sure you have installed cmake and CMAKE_FOLDER\bin added it in environment varaible Install anaconda then run following commands in anaconda shell. conda update conda conda update anaconda create new environment conda create -n env_dlib python=3.6 activate enviroment conda activate env_dlib install dlib conda install -c conda-forge dlib Verify your installation in … Read more
How to downgrade python from 3.7 to 3.6
I’m trying to install tensorflow but it needs a Python 3.6 installation and I only have Python 3.7 installed. I tried to switch using brew and pyenv but it doesn’t work. Does anyone know of a way to solve this problem?
Print multiple arguments in Python
There are many ways to do this. To fix your current code using %-formatting, you need to pass in a tuple: Pass it as a tuple:print(“Total score for %s is %s” % (name, score)) A tuple with a single element looks like (‘this’,). Here are some other common ways of doing it: Pass it as a dictionary:print(“Total … Read more
How to troubleshoot an “AttributeError: __exit__” in multiproccesing in Python?
The problem is in this line: You are using the with statement. It requires an object with __enter__ and __exit__ methods. But pattern.findall returns a list, with tries to store the __exit__ method, but it can’t find it, and raises an error. Just use instead.