All Questions
71,367
questions
0
votes
3
answers
30
views
How to call a number from a multi-dimensional complex list
I'm trying to make a sophisticated quiz that involves a list for a question and an answer that is included in a list. I want to call numbers from this multi-dimensional list using a "for" ...
0
votes
0
answers
38
views
Difference between appending a list and appending a copy of list [duplicate]
I need to understand the difference between appending a list and appending the copy of a list in python.
This is the code:
res=[1,2,3]
res1=[1,2,3]
c1=[5]
res.append(c1.copy())
res1.append(c1)
print(...
- 11
-1
votes
5
answers
50
views
Focusing on an element of a subset, of a subset
Fairly new to coding and I have a question regarding list and subsets.
Suppose this is my list:
list =
[[[a,2], [c,3], [e,3]],
[[g,4], [i,4] [k,3]],
[[b,3], [d,2], [f,2]]]
How would I go about making ...
2
votes
2
answers
40
views
How to match elements from input to list
I'm currently working on a Caesar cipher program, and I basically typed up a list of the alphabets: alphabet = ['a','b','c','d',...]
Then asked the user for a word to encrypt, text = input('Enter your ...
0
votes
1
answer
22
views
Python scipy integrate.quad with TypeError: 'NoneType' object is not iterable
I am trying to define the following integral using scipy:
and here is my code:
import numpy as np
import scipy.integrate as integrate
from scipy.stats import norm
def integrand(xi, thetai, *theta):
...
- 239
-3
votes
0
answers
41
views
Pulling random list choice from a list of lists in Python [closed]
I have a list of RGB values generated from an image:
color_list = [(192, 155, 120), (132, 81, 65), (226, 226, 199), (76, 94, 117), (140, 157, 178), (17, 34, 54),
(217, 213, 139), (134, ...
-1
votes
0
answers
36
views
Identify empty lists in 2d List / list of lists
I have an Excel file with 10000 customer ratings. Each row is a rating (row 1 = rating 1; row 2 = rating 2, ... ). I import these into Jupyter Notebook and clean them up. (lematization, remove ...
- 11
0
votes
1
answer
68
views
For loop not appending array with regex
The following code fetches version numbers from a URL, and then for each version number, goes to a page for that version number and fills an array with a specific pattern for a filename. The resulting ...
-5
votes
0
answers
51
views
Filtering a Python list with a np.array of indices
Could anyone explain to me how the list self.data is indexed/filtered with a numpy array of indices selec_idx?
The full class is available at https://github.com/kaidic/LDAM-DRW/blob/master/...
- 6
-2
votes
1
answer
33
views
Selecting items with special features from a list and transferring them to a new list [duplicate]
I'm new to programming and I'm learning Python, so my question might seem clumsily:
If we have a list (for example, a list of different names) and we want the names that end with a special
letter (for ...
- 11
-4
votes
1
answer
65
views
Why do I get "NoneType object is not iterable" when filtering a list of dictionaries with list comprehension and handling None? [closed]
I'm trying to filter a list of dictionaries in Python using list comprehension. I am handling None values, but I keep getting the error "NoneType object is not iterable". I expected my code ...
- 5
1
vote
2
answers
75
views
How to find duplicates in a text file in python and create a new text file with out them
I am trying to remove duplicates from text files to make a current process more efficient
Example input:
1 1
1 1
2 1
3 1
4 1
Example Output:
1 1
2 1
3 1
4 1
my issue is when ...
-4
votes
1
answer
54
views
How to convert a tuple which includes a [string] to a dictionary item
I have this list:
address_table3 = [(1, ['21 South Main']), (2, ['1560 West St']), (3, ['1900 Broadway'])]
I want to convert it to a dictionary with the address as key and integer as value.
When I ...
- 15
-1
votes
0
answers
48
views
cleaning list object containing text and creating new variables using Python
I am trying to create a data frame running the following code -
# pip install edgartools
import pandas as pd
from edgar import *
# Tell the SEC who you are
set_identity("Your Name youremail@...
- 177
0
votes
1
answer
21
views
How to make a flexible argument list for cursor.execute in python3?
In fact, I want to increase and decrease the mysql query items and the values (arguments) according to the status of the variable values.
based on my scenario I need to make a flexible mysql query ...
