dplyr

Is there a way to mimic the pipe operator from R in Python?

Is there a way to mimic the pipe operator from R in Python? Question: See the example below. Is it possible to put each Python operation on a new line? If I have many operations, the code is not all visible. I need to scroll the VS Code window to the right. Thanks # R …

Total answers: 1

How to use the same variable again in the pandas assign() method?

How to use the same variable again in the pandas assign() method? Question: I have started learning Python Pandas. So basically I am an R user and heavily use tidyverse. So I am trying to use Pandas in the same manner as the Tidyverse. So I am trying to execute this code which throws me …

Total answers: 2

How would I group, summarize and filter a DF in pandas in dplyr-fashion?

How would I group, summarize and filter a DF in pandas in dplyr-fashion? Question: I’m currently studying pandas and I come from an R/dplyr/tidyverse background. Pandas has a not-so-intuitive API and how would I elegantly rewrite such operation from dplyr using pandas syntax? library("nycflights13") library("tidyverse") delays <- flights %>% group_by(dest) %>% summarize( count = n(), …

Total answers: 2

python/pandas equivalent to dplyr 1.0.0 summarize(across())

python/pandas equivalent to dplyr 1.0.0 summarize(across()) Question: In R, I find the following very useful when dealing with many variables: library(dplyr) dat <- group_by(mtcars, cyl) summarize(dat, across(c(‘mpg’,’disp’), sum), across(c(‘drat’,’wt’,’qsec’), mean)) # A tibble: 3 x 5 cyl disp hp drat wt <dbl> <dbl> <dbl> <dbl> <dbl> 1 4 1156. 909 4.07 2.29 2 6 1283. …

Total answers: 3

Pandas – using assign and if-else statement in method chaining

Pandas – using assign and if-else statement in method chaining Question: I come from an R background and I’m trying to replicate the mutate() function from dplyr in pandas. I have a dataframe that looks like this: data = {‘name’: [‘Jason’, ‘Molly’, ‘Tina’, ‘Jake’, ‘Amy’], ‘age’: [42, 52, 36, 24, 73], ‘preTestScore’: [4, 24, 31, …

Total answers: 4

Selecting and renaming columns at the same time

Selecting and renaming columns at the same time Question: I looked around but could not find the solution for this. In R’s dplyr we can select and rename column in one line of code. select(Com=Commander,Sco=Score) I’m trying to do the same thing in pandas but could not find feasible solution for it yet! Let’s say …

Total answers: 4

Python pandas equivalent to R groupby mutate

Python pandas equivalent to R groupby mutate Question: So in R when I have a data frame consisting of say 4 columns, call it df and I want to compute the ratio by sum product of a group, I can it in such a way: // generate data df = data.frame(a=c(1,1,0,1,0),b=c(1,0,0,1,0),c=c(10,5,1,5,10),d=c(3,1,2,1,2)); | a b c …

Total answers: 3