How to transform polars datetime column into a string column? Question: I’m trying to change a datetime column to a string column using polars library. I only want the dates on the new column: import polars as pl df shape: (139878, 1) ┌─────────────────────┐ │ date_time │ │ — │ │ datetime[ns] │ ╞═════════════════════╡ │ 2007-04-19 …
Replace all keys and manipulate values in a python dict and construct a new dict in a list Question: Dict to manipulate data = { "homepage.services.service_title_1": "Web Development", "homepage.services.service_title_2": "App Development" } The goal is to replace all data’s keys with "key" and add new "content" keys having the value of the previous/original dict(data dict) …
Is there a Python function for repeating a string if the string contains a key substring? Question: Say I have a simple list such as "apples, bananasx2, orangesx3, pears." Is there a function that will convert this into "apples, bananas, bananas, oranges, oranges, oranges, pears"? I’ve tried to write an if loop but I can’t …
How to summarize the data to get separate column for each rank in pandas? Question: Table: Gate Status BUS Time Gate1 Vacant 102 10:00 Gate2 Occupied 105 10:01 Gate3 Vacant 114 10:00 Gate4 Occupied 123 9:55 Gate5 Occupied 127 10:00 Gate6 Occupied 126 10:01 Gate7 Occupied 106 10:01 Gate1 Vacant 101 10:15 Gate2 Occupied 113 …
Divide a selected item of a list by another column in a DataFrame and chose top results Question: I have the following test DateFrame: tag list Count icecream [[‘A’,0.9],[‘B’,0.6],[‘C’,0.5],[‘D’,0.3],[‘E’,0.1]] 5 potato [[‘U’,0.8],[‘V’,0.7],[‘W’,0.4],[‘X’,0.3],[‘Y’,0.2]] 5 Count is basically the number of lists in the DataFrame which I was able to get and add as a new column. …
Pandas – Equal occurrences of unique type for a column Question: I have a Pandas DF called “DF”. I would like to sample data from the population in such a way that, given a occurrence count, N = 100 and column = "Type", I would like to print a total of 100 rows from that …
Extract each item from a column of lists and then pick the top items Question: I have the following DateFrame: | tag | list | | ——– | —————————————————-| | icecream | [[‘A’,0.9],[‘B’,0.6],[‘C’,0.5],[‘D’,0.3],[‘E’,0.1]] | | potato | [[‘U’,0.8],[‘V’,0.7],[‘W’,0.4],[‘X’,0.3],[‘Y’,0.2]] | The column list is a list of lists with each list having an item and a …
How to combine multiple DataFrame rows into 1 with a column containing list values Question: I have a DataFrame like this: | cat0 | cat1 | cat2 | col_list | Quantity | | —– | —- | —- | ———-| ——– | | alpha | x | a | [a,b,c,d] | 4 | | alpha …
Find Specific Values in a Dataframe and Record the (Row, Column) Index Pair Question: I have a Pandas data frame that looks like the following: Now, I want to go through the entire data frame and record the column and row index pairs (shown as just numbers for this example) for any value that is …
Create a pandas dataframe from a dictionary of dictionaries Question: I have a dictionary of dictionaries similar to the following: data_dict = { ‘first_entry’: {‘a’: 345, ‘b’: 8484}, ‘second_entry’: {‘a’: 3423, ‘b’: 848} } I would like to create a dataframe of all these values, as follows: pd.DataFrame( [list(data_dict[key].values()) for key in data_dict.keys()], columns = …
