I am solving a large scale optimization problem using Python GEKKO. Some variables of the model have to not change during the optimization process. So I was wondering what is the difference between using the m.fix GEKKO method on the variables (m.Var) that I want to be constant, or replacing the variables wit…
Tag: python
How to query a nested tuple by index using a list to represent the index?
Get the value of a nested tuple at certain index like so: Want to query a nested tuple by index using as a list to represent the index, something like: Answer If you’re sure that there won’t be index errors, you can simply do: Output:
How to access multiple CSV files that share the same name from multiple folders from a zip file
I have a zip file (stored locally) with multiple folders in it. In each folder are a few CSV files. I need to only access 1 particular CSV from each folder. The CSV’s I am trying to access from each folder all share the same name, but I cannot figure out how to access a particular file from each folder,
Is there a method in Python to auto convert datetime.utcnow to GMT+7 now?
Is there a proper method to easily converts UTC now time to GMT+7 now time in Python’s datetime? I need to apply this to my db models in Flask. Here is my models.py Any advices would be appreciated. Thank in advance. Answer Finally, I can address this issue by creating a new method called gmt7now() with…
PySide6 TypeError when trying to open window for second time
I have two classes in PySide6. One is the main window and the second one is a widgetWindow. The main window is opening the widgetWindow with this function: The ConnectModbusWindow Class looks like this: I have no problem opening the ConnectModbusWindow for the first time. But when I try it for the second time…
sorting a list of females and males
I have an input: and I must sort it in the way that first comes all f(females) ordered by alphabet then comes all m(males) ordered by alphabet. This is the desirable output: .here is my code: my code dose not sort f.(females) correctly and Sara comes first. Could anybody help me? Answer Try this, it should be…
fastest way to reshape 2D numpy array (gray image) into a 3D stacked array
I have a 2D image with the shape (M, N), and would like to reshape it into (M//m * N//n, m, n). That is, to stack small patches of images into a 3D array. Currently, I used two for-loop to achieve that Is there any other faster way to do this? Thanks a lot! Answer Use skimage.util.view_as_blocks: Output: NB. …
Python Limit time to run pandas read_html
I am trying to limit the time for running dfs = pd.read_html(str(response.text)). Once it runs for more than 5 seconds, it will stop running for this url and move to running the next url. I did not find out timeout attribute in pd.readhtml. So how can I do that? Answer I’m not certain what the issue is,…
SQLAlchemy order_by ASC using nulls_last raises ProgrammingError (Google Spanner DB)
I’m trying to be able to dynamically sort a query by a given column name and have nulls be placed at the end of the list. It works fine when using desc ordering, but raises a ProgrammingError when trying to use nulls_last with asc order. It appears this error is being raised as the result of an InvalidA…
Nested Combo Menus in PySimpleGui
I’m looking for a drop down menu system to help control the flow for a variety of locations. The structure would look like this I looked into Menus but that will force to the top of the window regardless of placement in the layout. I tried to throw the menu code (basically what you see above) as a combo…