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Tagged with variable-assignment python-3.x
117 questions
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Variable assignment in an f-string [duplicate]
Question question regarding f-strings and expressions in Python 3.
The Python documentation states clearly that:
Formatted string literals (also called f-strings for short) let you
include the value ...
- 117
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42
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How does assignment to another assignment(adding an element in a dictionary) work? [duplicate]
Let's imagine a dictionary and we want to get some kind of a "reference" to a value that hasn't been populated yet.
>>> d = {} # This dictionary may have a huge number of elements.
&...
- 4,048
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Does performing operations on an empty linked list Node assigned to another node cause change in the original node in python3?
As mentioned here, if I have two variables x & y
x = 0
y = x
y += 1
print (x) #prints 0
Here the code will print 0, since assigning x to y and then changing y does not change x.
However, in the ...
- 49
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27
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UnboundLocalError: Python
I am trying to write a functions for ETS forecast.
Here is my code:
# evaluate an ETS model for a given parameters (t,d,s,p,b,r)
def train_ets_model(train, test, cfg):
t,d,s,p,b,r = cfg
# ...
0
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1
answer
43
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one function used to change variable in another function
I am trying to teach myself python, so I have made a project a few smaller projects working together and one of them is a Date tracker. The Date function works. However, when I try to call the new day ...
- 1
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181
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How to validate list items and give an error message when false?
So I'm making a game for my class. It's text based and uses a variety of rooms and items in order to complete the game. I've figured out a way to move in between rooms and to acquire the items. I have ...
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1
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49
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Multiple changes to the same variable within different if statements
SOLVED: I read through my code, it was a 'bug'. When I copied the dice roll method from the 'player character', since it uses the same mechanics for the enemies, I set the damage to 0 if it rolls with ...
- 3
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Is there a difference between assigning several variables in one line and doing it one by one in Python?
I am a complete beginner when it comes to Python and recently I tried to reverse a linked list on Leetcode.I wrote some code, tested it and got a wrong answer. Here is my code:
class Solution:
def ...
- 123
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1
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58
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trying to perform a calculation using values from a list with conditional output (also a list) values and keep getting item assignment error
I am trying to get an output list by using conditions to determine the values. For some conditions I want to set the output to a constant and for other conditions I want to perform a calculation from ...
- 3
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2
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427
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How To Store Column Mean As a Variable
ISSUE
I am performing data cleansing. I have calculated a column mean based on conditions fed into the .loc() function. Storing this output in the z variable is producing a (1,1) dataframe and ...
- 79
1
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43
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Assign "variable variables" to a directory
I would like to assign the following variable names to a directory for easy manipulation later. The idea is as follow:
data_1= fits.getdata(.....)
data_2= fits.getdata(.....)
data_3= fits.getdata(........
-1
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1
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146
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Double assignment of same variable in one expression in Python - does it have any purpose?
I was going through the delta lake documentation page.
There is a line like this :
from delta import *
builder = pyspark.sql.SparkSession.builder.appName("MyApp") \
.config("spark....
- 11.8k
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1
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Python Tuple Index Out of Range error after assignment to list
I jumped into some Python courses a little while ago and have gotten to a milestone project to make a simple tic-tac-toe game.
But I am running into a bit of a wall due to an index error that keeps ...
- 15
2
votes
4
answers
578
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How to pass **kwargs parameters to the relevant wrapped functions?
I want to define a wrapper function that wraps up a number of other functions with many arguments and want to use the magic variables in the wrapper function.
For example, suppose I have these three ...
- 1,571
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124
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Assign list without reference [duplicate]
Let's see an example,
list1 = ["a", "b", "c"]
list2 = list1
then I append in list1
list1.append(1)
list1.append(2)
list1.append(3)
then list1 will look like
list1 = [&...
