Use Python to calculate difference between date in current row and date in previous row and previous column Question: I am trying to calculate the difference between dates in different rows that are not in the same column. I have the following dataset: Kiosk Online Offline Online Days 1 12/1/2022 12/5/2022 4 1 12/7/2022 12/17/2022 …
How to get difference of columns in DataFrame Pandas? Question: I need to get a DataFrame with column difference of column that I choose (for example the last one) I tried using df.diff(axis=1, periods=1) will count column difference with the next column. However, I want to get difference of columns with exactly one column (last …
Python Pandas: groupby.diff calculates difference between the last element of a group and the first element of the following group Question: I have the following – already sorted – pandas dataframe: instrumentExtId Date proxyMethod isForceXS xsValue curveValue .ID1 2008-03-28 00:00:00 CrossSectional FALSE 6.86046681 6.86046681 .ID1 2008-03-31 00:00:00 CrossSectional FALSE 6.97468855 6.97468855 .ID1 2008-04-01 00:00:00 CrossSectional …
How to calculate diff between previous rows and new rows for different columns Question: I have a df as follows index open close 10 12 15 16 20 19 To find diff between previous row of one column, we can use df[‘diff] = df[‘close’].diff() But i want to find diff between current open and previous …
Keeping the dimensions when using torch.diff on a tensor in pytorch Question: Suppose the following code: a=torch.rand(size=(3,3,3), dtype=torch.float32) a_diff=torch.diff(a, n=1, dim= 1, prepend=None, append=None).shape print(a_diff) torch.Size([3, 2, 3]) I would like to keep the dimensions like the original a with (3,3,3). How can I append 0 to the beginning of the sequence so that the dimensions …
How can I find the difference between each row and the top row in each group?[python] Question: This is a sample of my real dataset. data = {‘CarNo’: [888, 81, 16, 62, 31, 23, 777, 23, 777, 31, 888, 62, 81, 16, 888, 31, 81, 62, 16, 23], ‘LapTime’: [119628, 117170, 119846, 117178, 119516, 117915, …
Using python difflib to compare more than two files Question: I would like to get an overview over e.g. the ldd dependency list of multiple (3+) computers by comparing them with each other and highlighting the differences. For example, if I have a dict that looks as following: my_ldd_outputs = { 01:"<ldd_output>", 02:"<ldd_output>", … 09:"<ldd_output>", …
pandas cumsum on lag-differenced dataframe Question: Say I have a pd.DataFrame() that I differenced with .diff(5), which works like "new number at idx i = (number at idx i) – (number at idx i-5)" import pandas as pd import random example_df = pd.DataFrame(data=random.sample(range(1, 100), 20), columns=["number"]) df_diff = example_df.diff(5) Now I want to undo this …
Finding different attributes between two versions of an object (Python) Question: I have two instances of an object. one is the existing representation of the object as saved in a database and a new version created by some script. I want to check which attributes of the new version differ from the attributes of the …
Get lines of change from a Git diff file for a GitHub repo without using git command Question: The goal I am building a git stats script in Python that can only access the historical git diff patches, so basically files like this diff –git a/README b/README index 980a0d5f..fef29374 100644 — a/README +++ b/README @@ …
