ellipsis

Python Numpy; difference between colon and ellipsis indexing

Python Numpy; difference between colon and ellipsis indexing Question: I have been experimenting with Numpy array indexing using both colon and ellipsis. However, I cannot understand the results that I am getting. Below is the example code: >>> a = np.array([[1,2],[3,4]]) >>> a array([[1, 2], [3, 4]]) >>> a[:,np.newaxis] # <– the shape of the …

Total answers: 1

What does Python mean by printing "[…]" for an object reference?

What does Python mean by printing "[…]" for an object reference? Question: I’m printing a value of a what I thought was a list, but the output that I get is: […] What does this represent? How do I test for it? I’ve tried: myVar.__repr__() != ‘[…]’ and myVar.__repr_() != Ellipsis but no dice… Here’s …

Total answers: 4

What do ellipsis […] mean in a list?

What do ellipsis […] mean in a list? Question: I was playing around in python. I used the following code in IDLE: p = [1, 2] p[1:1] = [p] print p The output was: [1, […], 2] What is this […]? Interestingly I could now use this as a list of list of list up …

Total answers: 5

Can't understand a matplotlib's example where there are both ellipsis and colons probably associated with indices

Can't understand a matplotlib's example where there are both ellipsis and colons probably associated with indices Question: I have a question about this matplotlib‘s example. Here’s the part that I don’t understand def update_line(num, data, line): line.set_data(data[…,:num]) return line, What does line.set_data(data[…,:num]) do? Asked By: Tianyang Li || Source Answers: It’s a special syntax provided …

Total answers: 2

What does the Ellipsis object do?

What does the Ellipsis object do? Question: While idly surfing the namespace I noticed an odd looking object called Ellipsis, it does not seem to be or do anything special, but it’s a globally available builtin. After a search I found that it is used in some obscure variant of the slicing syntax by Numpy …

Total answers: 14

How do you use the ellipsis slicing syntax in Python?

How do you use the ellipsis slicing syntax in Python? Question: This came up in Hidden features of Python, but I can’t see good documentation or examples that explain how the feature works. Asked By: miracle2k || Source Answers: Ellipsis, or … is not a hidden feature, it’s just a constant. It’s quite different to, …

Total answers: 4