In Django app, I’m using Postgres DB. I have two tables where one of them has 76 million records and the other 8.2 million. I have created a new migration file where in I’m adding a new column to a table in an app and setting default value to 0. My database is hosted on Ubuntu EC2 instance which h…
Tag: python
How to parse guess_language to read 30000 tweets?
I am using guess_language to detect the language of the tweets for a school project. I used pandas to read the .csv file. I have around 30000 rows. However, my problem is that the guess language can only read one tweet at a time. guess_language(“Top story: ‘Massive Mental Health Crisis’ “) …
Calling round(), ceiling(), floor(), min(), max() in pandas eval
As title says, Is there a way to support round, ceiling, min, max, floor functions in pandas eval. DataFrame: abs() and sqrt() function works with pandas eval. i.e. can anyone suggest how to access rest of the functions in eval? I also tried ‘local_dict’ in eval to see if I can define custom funct…
How to solve ImportError: dlopen(): Symbol not found:…. Expected in: flat namespace
Can anyone help me solve this issue? I’m using a Mac if that’s of any relevance Answer I couldn’t quite figure out what the issue was but I’m assuming __PyEval_GetBuiltinId was broken/uninstalled. So all I did to fix this was pip uninstall recordclass and then pip install –no-cac…
How to plot the graph obtained after using solve_ivp from scipy package to solve a set of differential equations in python
I’m using solve_ivp in python to solve a set of differential equations in state-space form.My code is as follows: It shows error while using the normal plt.plot(t,X) command. How do I plot the graph between X and t? Please help Answer It’s a bit unclear what’s being calculated here, but chec…
Pylint setup with pre-commit In python 3.5
I was trying to set up pylint with pre-commit in my project. I came to this answer where they tell how to set up my .pre-commit-config.yaml. When I went to the repository mentioned in the answer, they had written that This mirror repository is deprecated, use pylint directly. So I set my .pre-commit-config.ya…
Using .loc accessor
I’m trying to use .loc to find out sex of the youngest person here in the chart. The following did not work: Answer You can achieve it like this:
How to remove NaN on CSV?
I have a .csv file of a table consisting of 12 col and 30k rows. One of the col is ‘mentions’, some of the data are empty (NaN). I am trying to remove all the rows where mentions = NaN. I don’t want to fill it with new data. I just wanna remove those rows so they wont be part
PyCharm Matplotlib “UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure. plt.show()”
I am having problems with matplotlib.pyplot.show() function. I am using PyCharm on Linux, and i have a VirtualEnv. When i execute the file x.py in the built terminal in PyCharm (using venv) like this $ python x.py everything works fine, the function plt.show() renders and shows the plotted graph well. i did a…
How to repeat the steps
In my program I have total of 3 steps. To find the mean Split the given list using the mean value If the threshold value > epsilon then update mean value and repeat the step 2 again with updated mean value, else finished. I have achieved above two steps anyhow. Third step I have achieved only half and stru…