Admittedly, this question seems like it might be a popular one, but I couldn’t really find it (perhaps I wasn’t using the right search terms). Anyway, I need something of this sort: So whenever a key’s value is already in the dict, append the key to the list of keys mapping to that value; el…
how to calculate accuracy based on two lists python?
I have two lists. How can I calculate accuracy based on these lists? Answer This will give you the percentage that were correct – that is, the number correct over the total number. It works by calculating the number that are equal between the two lists then dividing by the total number of labels. Also n…
Print list of lists in separate lines
I have a list of lists: I want the output in the following format: I have tried it the following way , but the outputs are not in the desired way: Outputs: While changing the print call to use end instead: Outputs: Any ideas? Answer Iterate through every sub-list in your original list and unpack it in the pri…
Unable to Load an Image from an URL at TKinter
My goal is to display an JPG image from an URL using tkinter python. This is the stackoverflow link that I used as a reference. But when I try to run the code, I have received a bunch of error such as: KeyError: b’R0l……. AttributeError: ‘PhotoImage’ object has no attribute ‘…
Extend Python list by assigning beyond end (Matlab-style)
I want to use Python to create a file that looks like I tried to write this script An error is thrown: IndexError: list index out of range. There are many answers on similar questions that recommend using myParagraph.append(‘something’), which I know works. But I want to better understand the init…
Python program to check matching of simple parentheses
I came across this exercise of checking whether or not the simple brackets “(“, “)” in a given string are matched evenly. I have seen examples here using the stack command which I haven’t encountered yet. So I attempted a different approach. Can anyone tell me where I am going wr…
tensorflow.train.import_meta_graph does not work?
I try to simply save and restore a graph, but the simplest example does not work as expected (this is done using version 0.9.0 or 0.10.0 on Linux 64 without CUDA using python 2.7 or 3.5.2) First I save the graph like this: This creates a file “file” that is non-empty and also sets g1 to something …
Automate the boring stuff with Python: Comma Code
Currently working my way through this beginners book and have completed one of the practice projects ‘Comma Code’ which asks the user to construct a program which: takes a list value as an argument and returns a string with all the items separated by a comma and a space, with and inserted before t…
Why is matplotlib’s notched boxplot folding back on itself?
I tried to make a notched boxplot using matplotlib, but found the notched box tends to overextend and then fold back on itself. This does not happen when I make a regular boxplot. This can be seen with the following code and the resulting plot that gets generated: Does anyone know what I’m doing wrong a…
I keep getting a read issue [Errno 22] Invalid argument
I have tried putting the (r”F:Server … “r”) it says: file.write(float(u) + ‘n’) TypeError: unsupported operand type(s) for +: ‘float’ and ‘str’. When I don’t put the r were it is it will double \ on me saying: read issue [Errno 22] Invalid argu…