All Questions
Tagged with operators python-3.x
141
questions
-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 ...
1
vote
0
answers
17
views
What does the operator id() return in Python3? [duplicate]
Program:
a = 5
b = 5
print(a == b)
print(id(a) == id(b))
Output:
True
True
I understand the first line of the output should be True, but why is the second line also True?
Doesn't the operator id() ...
- 11
-1
votes
3
answers
126
views
Using multipe operators in Python sequentially
I'm trying to understand how Python handles using multiple sequential operators to add and subtract numbers.
Here is an example of what I mean:
>>> 5+-2
3
>>> 5-+2
3
>>> 5+-+...
- 171
1
vote
1
answer
110
views
How to overload the add operator to return the length of two string when they are added?
I am trying to create a class diffStr that behaves like str except, when a user tries to add or multiply two strings, the output is the length of each string added or multiplied (respectively).
My ...
- 39
0
votes
4
answers
126
views
Python script that increases a number by a percent and then with a new number till goal
I found this problem and wanted to try to execute, but got stuck:
Compile a program that allows you to determine how many days will be enough for 200 something if consumed on the first day 5 tons, but ...
- 3
1
vote
4
answers
75
views
Can anyone explain how to solve this problem
A program that reads 3 numbers A, B and C and checks if each 3 numbers are greater than or equal to 20. Output should be single line containing a boolean. True should be printed if each number is ...
1
vote
3
answers
453
views
compare two attribute of objects from different list of object python
I'm still pretty new to python and oop and I have some struggles resolving this problem without breaking the performance.
I want to compare the id of my user (that's what I have done with the eq ...
- 25
-1
votes
2
answers
802
views
What is the difference between the operator acting elementwise vs on the matrix using Numpy?
Numpy docs talks about the difference between the product operator and the matrix operator.
Unlike in many matrix languages, the product operator * operates
elementwise in NumPy arrays. The matrix ...
- 1,796
1
vote
2
answers
49
views
Contiguous operators in Python raises no error
Accidentally, I typed multiple contiguous + operators and it ran successfully.
This is what I did
2 ++ 3 // returns 5
Then i tried multiple combinations and it actually executes only the last ...
- 1,667
-4
votes
1
answer
45
views
Cannot understand how following sample code works
['f', 't'][bool('spam')]
this gives result ,
't'
But I cannot understand how this sample of code works?
- 3
-2
votes
4
answers
49
views
How to do this without double operators?
I was trying to print some numbers within a certain range horizontally using for loop with double operators(+=)
str_1=''
for i in range(10):
str_1 += str(i)+" "
print(str_1)
The ...
- 47
1
vote
1
answer
68
views
The order of operations in Python [duplicate]
I'm trying to understand the order of operators in Python. I tried the following:
var1 = None
var2 = 0
print( (var1 is None) != var2 )
print( (var1 is None) != var2 is True ) ###
print( ((var1 is ...
- 11
0
votes
1
answer
77
views
equal operator is not operating the way it should Python
I am currently trying to write an script which is checking if the current date and time is equal to a date and time in a file. But for some weird reason my main if statement is only being triggered ...
0
votes
1
answer
252
views
Confused with greater than and less than operators
I'm new to coding and I'm learning how to code in python. What I can't get my head around is why the '<' is read as '>' when a number comes before it.
e.g.
if 4 < people <=14:
print('...
- 1
-5
votes
2
answers
382
views
How to divide a number by 10 only in Python? [closed]
I just need to divide some number by only 10. For instance, if the number is 127, the result should only be 12 and remained to be 7. Is there a way I can get Python to give me these BOTH results? ...
- 11