I write a small program using comprehension list python and I need to assign a value to dictionary. It gives me syntax error. It says “[” was not closed. Could you please help me. Answer Just inspired by earlier post, you can also do this way: Of course, Counter is the best to do quick tallying.
Tag: python
Concatenate two columns excepting strings from a list_pandas
I concatenate two columns for the situation where strings from column ‘words’ are not present in the column ‘sentence’. My code is: Additionally, I want to restrict the concatenation per row if, in column ‘words’ I have strings present in this list: Here is an example of ho…
How to split a column and add additional rows from the split values in pandas?
I have a dataframe as: Here i would like to split a column middle_name using delimeter semicolon ‘;’. after splitting i would like to have a additional rows as many spitted words as existed. for example: should be Answer here is the documentation of df.explode() doc
Transformation of time series data arranged as value per column into Pandas 2D Dataframe
I have data where 13000 high frequency time-series data points are mapped as one column per point assosiated with one timestamp, when the data was measured. I read this data from an influxDB and get a Pandas.DataFrame structured as follows: I know the sampling frequency of the high frequency data (10 MHz), so…
How to re-direct output path in python
I want to read urls from .txt file in one directory (Root/URLS/Gibiru_urls.txt) and output into another directory (Root/Images/Gibiru_pics). My python file is located in (Root) Answer I was able to re-direct. It was the os.chdir() method I was looking for.
When I write python code in terminal it only prints older version of the file (VScode)
Just recently got into python and I’m having trouble understanding what’s going on. When I write print(“hello world”), I input python3 name.py in the terminal and it prints. However when I change the str to (e.g.) “bye”, and input the same thing in the terminal, it still pr…
Flip sprite when changing the direction of movement
Today I started to learn pygame and python to eventually remake the simple game “Graphwar”. As my first project I chose to make a really simple 2d car game while following a tutorial, now I want to try something on my own. That is to make my cars to visually change direction by using pygame.transf…
how can i calculate the difference between two dates and times in python
my code looks like this: listaDivisa looks like this: I want to calculate how much time (better in minutes) the sensor was ON, I tried doing this: but it doesn’t work, another raw alternative I tried was but, not minding about the fact that it doesn’t even work, I don’t think it could be a s…
Convert rec.array to dataframe
I’ve been trying to convert a numpy rec.array into a dataframe. The current array looks like: The result should be a five-column dataframe like the following: Weights v_1 v_2 v_3 v_4 0.2 1.76405235 0.40015721 0.97873798 2.2408932 0.2 1.86755799 -0.97727788 0.95008842 -0.15135721 …. …. ……
Python Pandas, Running Sum, based on previous rows value and grouped
I have a pandas dataframe along these lines, based on where a customer service case sits before being closed. Every time the case is edited and audit trial is captured. I want to generate a counter for each time the Department of a case changes from the department it was previously in. ID Department Start Dat…