How can I get a sublist with wraparound in Python Question: Simple 1D case I would like to get a substring with wraparound. str = "=Hello community of Python=" # ^^^^^ ^^^^^^^ I want this wrapped substring str[-7] > ‘P’ str[5] > ‘o’ str[-7:5] > ” Why does this slice of a sequence starting at …
Python slicing operator [start:stop:step] Question: I get the idea of the slicing operator in Python, but I am kind of confused at "stop". For instance: lst = [1,2,3,4,5] print(lst[0:4]) I think the answer should be [1,2,3,4,5], since it will stop on index 4, which is element 5. However, the correct answer will be [1,2,3,4]. What …
Slice MultiIndex by multiple tuples Question: I have a DataFrame with multiple index levels. I define some subset by selecting multiple combinations of all levels but the last. Then I want to slice the original DataFrame with that subset, but I cannot find how. Best is to look at a simple example: In [1]: import …
How to apply slicing to a pandas DataFrame? Question: I am trying to replace the following code: DfInt[‘Closest Service’] = DfInt[ [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, …
xarray dataset extract values select Question: I have a xarray dataset from which I would like to extract points based on their coordinates. When sel is used for two coordinates it returns a 2D array. Sometimes this is what I want and it is the intended behavior, but I would like to extract a line …
User Input Slice String Question: stringinput = (str(input("Enter a word to start: "))) removeinput = (str(input("How many character’s do you want to remove?"))) if (str)(removeinput) > (str)(stringinput): print("Cannot remove more chars than there are chars, try again") else: removed = stringinput[-1,-removeinput,1] print((str)(removed)) Traceback (most recent call last): File "C:UsersxPycharmProjectspythonProjectPynative Beginner Tasks.py", line 110, in <module> …
Place multiple numpy arrays into a larger array Question: I wish to create a large array and replace some of the values with two other arrays. Each assignment works independently but the second statement overrides the first. I wish to see both images in the background plot. import numpy as np import matplotlib.pyplot as plt …
Slice Dataframe in sub-dataframes when specific string in column is found Question: Assume I have the dataframe df and I want to slice this in multiple dataframes and store each in a list (list_of_dfs). Each sub-dataframe should only contain the rows "Result". One sub-dataframe starts, when in column "Point" the value "P1" and in column …
Regular expression in Pandas: Get substring between a space and a colon Question: I have a Pandas dataframe with the column store. It contains a list of stores that look like this: H-E-B 721:1101 W STAN SCHLUETER LOOP,KILLEEN,TX H-E-B PLUS 39:2509 N MAIN ST,BELTON,TX I want the store number, which are 721 and 39 in …
Having problems using dictionaries keys and values within a while loop conditions Question: I want to create a little program that after obtaining the user’s age it will tell them the relative cost for a movie ticket for the age range they fall within. This is easy to do with a few age ranges, but …
