I don’t know if it is right to say “standardize” categorical variable string, but basically I want to create a function to set all observations F or f in the column below to 0 and M or m to 1: I tried this: But I got an error: Any ideas? Thanks! Answer There is no replace function defined in…
Tag: python
How can I setup a python CLI application so that I can use it without directly referring to the interpreter?
I want to build an application, say it’s called helloworld, with a command line interface in python. My application as multiple nested modules and a top level module main.py. Say the layout is : At this point, once my project is installed I can run it using #> python path/to/helloworld/main.py arg1 a…
Counting number of rows between min and max in pandas
I have a simple question in pandas. Lets say I have following data: How do I count the number of rows which are between minimum and maximum value in column a? So number of rows (it is 3 in this case) which are between 1 and 10 in this particular case? Thanks Answer IIUC, you could get the index of
How to execute multiple sql files in airflow using PostgresOperator?
I have multiple sql files in my sql folder. I am not sure how to execute all the sql files within a DAG? For a single file, below code works Answer With a list Or you can make it dynamic
Behavior of steps_per_epoch and validation_steps in Keras Model
I’m a little bit confused on the behavior of steps_per_epoch and validation_steps in the fit function. More particularly, if I set steps_per_epoch to be smaller than total_records/batch_size, would it be that a) the model only trains on the same subset of training data for every epoch or b) the model wi…
No data available in table | Flask/Python/Sqlite
I am trying to use a simple app to display database information using Python, Flask and SQLite. I have three files server_table.html, server_table.py and base.html. My SQLite database testdb.db is constructed successfully and I am able to pull/push data to it. The columns and data type are correct for the dat…
How to round certain values in list
I have a list in Python I want to round first three values I need to round down to 100.0 if they are < 130.0 and then similarly round down to 200 if they are < 230 and so on. Answer Based on comments it seems you want to round down to 100.0 if they are < 130.0 and then
How to annotate that a function produces a dataclass?
Say you want to wrap the dataclass decorator like so: How should my_dataclass and/or something_else be annotated to indicate that the return type is a dataclass? See the following example on how the builtin @dataclass works but a custom @my_dataclass does not: Answer There is no feasible way to do this prior …
How to install the package scikit-geometry?
I am trying to compute a class of Minkowski sums for some mathematical work, but there are too many to do by hand in a reasonable amount of time. I found this documentation for a package called scikit-geometry, but when I write import skgeom as sg as in the examples in the documentation, VSCode can’t fi…
How can I transfer the attributes of parent elements to child elements in XML using python?
Given the following structure of XML file: how can transfer the attributes from parent to child and delete the parent element to get the following structure: Answer Well, you need to find <parent>, then find <child>, copy attributes from <parent> to <child>, append <child> to roo…