Let’s say I have the following data set: I would like to find out – without any cumbersome for loop – which columns contain at least one case with an alphabetical letter (here: B and C). I guess the result should either be a list of booleans or indices. Thank you for your help! Answer As a q…
Tag: python
How to turn the following dictionary keys to another keys?
Original keys (dict_keys with tuple as keys) are: How can I turn them to: It is also okay to just create a new dictionary with the new keys. But I do not know how to do so either way. Answer You can use dictionary comprehension to create new dict with new keys: Prints:
does class declaration statement cause memory allocation in python?
I know that in languages like c++, memory is not allocated until instantiation. Is it the same in python? I’m reading the How to think like a computer scientist course. In that course, to elaborate this snippet, a weird figure is given: This Figure is given: What I get from the figure, Is that after the…
How to get QuerySet values separately?
How I can to get values from QuerySet separately? The result of my QuerySet now is <QuertSet[<value: 5>, <value:90>]> How I can get 5, 90 to separate variable ? Answer There are many ways you can acheive it. For example: or using values_list(): If you want the first two values of a queryset,…
remove special characters and string from df columns in python
Currently my column is of object type and I’m trying to convert it to type numeric. But it shows the error because of special characters and string contained in it. error: code: So, I want to remove the special char and string from the columns that requires only number and col1 being one of it. Any sugg…
Extracting codes with regex (irregular regex keys)
I´m extracting the codes from a string list using coming from the title email. Which looks something like: So far what I tried is: My issue is that, I´m not able to extract the code next to the words that goes before [‘PN’, ‘P/N’, ‘PN:’, ‘P/N:’], specially if th…
Writing Arabic in Pycharm console
In PyCharm I have no problem in printing Arabic in the console, but the problem that I can’t write in Arabic. Instead it is written as weird symbols. How can I fix it? Answer It’s likely that you’re using some weird encoding, try to change your file encoding to UTF-8 or UTF-16: more info: https://…
cant fix error: create() takes 1 positional argument but 2 were given and cant seem to fix it
I have a django rest framework view set. I want to create an object based on data that is passed in with the post request. I have it setup right now to create new object with dummy data before it starts to take information from the request. I am getting the following error: Here is my viewset method: Answer P…
Is there a way to visualise time series data in such a way that on x-axis i get ticks in year-month format in python?
I am trying to plot a data of stock close price for each day but on the x-axis, i get no labels on xtick instead of year-month format I tried to take the “Date” and “Close Price” column in a separate dataframe and then tried plotting them. I have dataframe similar to this Answer Just c…
why this way of executing python isn’t working
works, and works, but gave an error Could anyone help point out why? Thank you. Answer ; can only be used to separate “simple” statements, not compound statements. https://docs.python.org/3/reference/compound_stmts.html