All Questions
783
questions
-5
votes
1
answer
64
views
Comparison Operators result in Python
Why in Python print(bool(7>8)==False==True) results False, logically it should be True?
as bool(7>8) is False, therefore
False==False==True -> True==True -> True (NOT False)
as the ...
0
votes
0
answers
53
views
What does a caret and an equal sign (^=) do in Python? [duplicate]
I was looking at the solution to a Python problem, and in it was
int ^= num
I don't understand what it means.
When I searched for it, I got a bunch of posts explaining what the caret sign does on its ...
- 11
0
votes
1
answer
61
views
How to parse search engine keywords input
I'm implementing a tool that lets users search for terms in texts. I'm currently focused on handling more complex input from the search.
The operators I am looking to support are :
| = OR
& = AND
...
- 47
2
votes
1
answer
47
views
Understanding Array comparison while using custom data types with numpy
i have a question regarding comparison with numpy arrays while using cusom data types.
Here is my code:
import numpy as np
class Expr:
def __add__(self, other):
return Add(self, other)
...
- 61
1
vote
1
answer
22
views
ComputeError with polars dataframe while trying to pass a column expressions in a simple shift() operation
Sorry, I'm starting out in Polars. Is there a way to achieve the same functionality of the shift(n) function where n is a dataframe variable.
When I try:
df = pl.DataFrame({
"a": [1, 2, ...
- 11
0
votes
0
answers
22
views
How do I define a custom method for @ operator? [duplicate]
Numpy uses the @ operator for matrix multiplication between two arrays.
I have my own class for which I want to define a method using the @ operator.
How should this be done? I define my own __add__, ...
- 16
0
votes
0
answers
28
views
Airfllow: Having a Custom Sensor Operator inside of python operator
I have a dag task called check_file that is responsible to check the file in remote location.
check_file = PythonOperator(
task_id='check_file',
python_callable=check_file,
...
- 1
-1
votes
1
answer
51
views
Why does Python return 0 for this & operation?
I'm learning Python and messing around with operations when I tried
>>> 14 & 16
0
>>> 0b1110 & 0b10000
0
In my head it would look like this:
>>> 0b1110 & ...
- 3
0
votes
0
answers
80
views
Inaccurate results using mod operator in python [duplicate]
I'm having trouble in a condition i want in a if statement. I want to check if a variable(float type), like 0.9, is multiple of 0.1.
I had this code:
(t * dt) % 0.1 == 0
I've tried the modulo ...
- 1
0
votes
0
answers
39
views
Python example f"{heading:=^30}"
I ran across this in a basic Python tutorial (https://docs.python.org/3.10/tutorial/controlflow.html). The example is:
>>> heading = "Centered string"
>>> f"{heading:=...
- 255
0
votes
2
answers
55
views
Python script: upper bound of range not being included
I wrote this script:
inpf = input('input file name:')
lb = input('lower bound:')
ub = input('upper bound:')
with open(inpf, 'r') as f:
contents = f.readlines()
for i in contents:
if lb ...
- 1
-1
votes
1
answer
42
views
Combining python "in" and "==" operator has confusing behavior [duplicate]
A buddy of mine is learning python and I saw an odd thing he did with his code:
if ch in input[index] == test[index])
Obviously there's some context missing for that fragment, but interestingly, that ...
- 379
0
votes
2
answers
27
views
I want to know which determines the output like not in this case applies to first condition only or both
x=(not (5==5) and (10<12))
print(x)
when executing. not negates the first expression or both?
In my opinion "not" should be executed with (5==5) only but my colleague says it will affect ...
- 1
-3
votes
1
answer
77
views
Could you please explain below three codes?, why they are giving different results
code 1
list_a = []
list_a += str(1)
O/P:
['1']
code 2
list_a = []
list_a += 1
O/P:
Type Error
code 3
list_a = []
list_a = list_a + str(1)
O/P:
Type Error
I'm expecting that if += operator ...
-2
votes
1
answer
89
views
Fonction skip bool and doesn't calculate [duplicate]
Welcome in my misery.
I'm a novice/beginner in coding :)
I've been trying to write a calculator that detects
anomalies in the input provided.
My first problem was to neglect any letters and
that was ...
