This question already has answers here:
Understanding slicing
(38 answers)
Closed 9 years ago.
How to say in python "from the beginning of the array" and "all the array". For example if my code in Matlab is:
images(:, n) = img(:)
What is its equivalent in python?
It is
images[:,n] = img.ravel()
Related
This question already has answers here:
Why doesn't Python print return values?
(3 answers)
Function in Python not producing output? [duplicate]
(4 answers)
What is the purpose of the return statement? How is it different from printing?
(15 answers)
Closed 2 months ago.
def plus_ten(a):
return a + 10
plus_ten(2)
I thought that the plus_ten(2) would generate an output of 12, but when I run the code, it comes up with nothing.
Why is this?
This was lifted directly from: https://www.youtube.com/watch?v=lA9OuhldJd0&ab_channel=365DataScience
It shows in the video that there should be an output. However, in my VS studio, there is no output... please help!
This question already has answers here:
Why does "x = x.append(...)" not work in a for loop?
(8 answers)
Closed 2 years ago.
This is my code but my output gives a none type back and not a list full of numbers.
PHC=[]
for i in range(len(df)):
x=df['HC'][0:i+1].mean()
PHC=PHC.append(x)
len[df]['HC']
instead of
len[df]
This question already has answers here:
What is the '#=' symbol for in Python?
(3 answers)
What does the "at" (#) symbol do in Python?
(14 answers)
Closed 3 years ago.
I have come across this code and I have seen this unusual operation:
return Xtrain # eigenvectors[:2]
Does anyone know what it does?
Python documentation says:
Matrix Multiplication
Operator
a # b
Function
matmul(a, b)
This question already has answers here:
Slice a string in groovy
(3 answers)
Closed 6 years ago.
Given the following list:
a = [0,1,2,3,4,5]
In python I can do this:
a[2:4] which will get me [2,3]
Given that same list in groovy, is there a similar slicing mechanism I can use?
The answer is:
a[2..3]
another example would be if you wanted [1,2,3,4]:
a[1..4]
This question already has answers here:
Asterisk in function call [duplicate]
(3 answers)
What does the asterisk do in Python other than multiplication and exponentiation? [duplicate]
(2 answers)
Closed 6 years ago.
Very Quick Question. I have a print function that looks like the statement below:
print(*Runner(x,y))
What is the * for in this case? I have no clue what it does in this context.