What is the difference between shallow copy, deepcopy and normal assignment operation?
The difference between shallow and deep copying is only relevant for
compound objects (objects that contain other objects, like lists or
class instances):
variable-assignment
Multiple assignment and evaluation order in Python
What is the difference between the following Python expressions:
Local variable referenced before assignment?
I am using the PyQt library to take a screenshot of a webpage, then reading through a CSV file of different URLs. I am keeping a variable feed that incremements everytime a URL is processed and therefore should increment to the number of URLs.
What is the difference between slice assignment that slices the whole list and direct assignment?
I see at many places the use of slice assignment for lists. I am able to understand its use when used with (non-default) indices, but I am not able to understand its use like:
How to assign a value to a TensorFlow variable?
I am trying to assign a new value to a tensorflow variable in python.
If two variables point to the same object, why doesn’t reassigning one variable affect the other?
I am trying to understand how variables work in python. Say I have an object stored in the variable a:
Why isn’t assigning to an empty list (e.g. [] = “”) an error?
In python 3.4, I am typing
How to assign a variable in an IF condition, and then return it?
def isBig(x): if x > 4: return 'apple' else: return 'orange' This works: if isBig(y): return isBig(y) This does NOT work: if fruit = isBig(y): return fruit Why doesn’t the 2nd one work!? I want a 1-liner. Except, the 1st one will call the function TWICE. How to make it 1 liner, without calling the … Read more
Is it possible only to declare a variable without assigning any value in Python?
Is it possible to declare a variable in Python, like so?:
Python Assignment Operator Precedence – (a, b) = a[b] = {}, 5
I saw this Python snippet on Twitter and was quite confused by the output: