python - Why does += behave unexpectedly on lists? - Stack Overflow
177 The += operator in python seems to be operating unexpectedly on lists. Can anyone tell me what is going on here?
Difference between del, remove, and pop on lists in Python
Related post on similar lines for set data structure - Runtime difference between set.discard and set.remove methods in Python?
What are the advantages of NumPy over regular Python lists?
834 NumPy's arrays are more compact than Python lists -- a list of lists as you describe, in Python, would take at least 20 MB or so, while a NumPy 3D array with single-precision floats in the cells …
How do I concatenate two lists in Python? - Stack Overflow
Do you want to simply append, or do you want to merge the two lists in sorted order? What output do you expect for [1,3,6] and [2,4,5]? Can we assume both sublists are already sorted (as in your …
python - How to get the Cartesian product of multiple lists - Stack ...
Mar 19, 2019 · One common application for this technique is to avoid deeply nested loops. See Avoiding nested for loops for a more specific duplicate. Similarly, this technique might be used to "explode" a …
python - List vs tuple, when to use each? - Stack Overflow
In Python, when should you use lists and when tuples? Sometimes you don't have a choice, for example if you have "hello %s you are %s years old" % x then x must be a tuple. But if I am the one who
Python creating a dictionary of lists - Stack Overflow
Python creating a dictionary of lists Asked 16 years, 6 months ago Modified 2 years, 9 months ago Viewed 636k times
python - Element-wise addition of 2 lists? - Stack Overflow
Sep 10, 2013 · If you have an unknown number of lists of the same length, you can use the function v5. v6 - The operator module exports a set of efficient functions corresponding to the intrinsic operators …
Python: list of lists - Stack Overflow
First, I strongly recommend that you rename your variable list to something else. list is the name of the built-in list constructor, and you're hiding its normal function. I will rename list to a in the following. …
slice - How slicing in Python works - Stack Overflow
The colon, :, is what tells Python you're giving it a slice and not a regular index. That's why the idiomatic way of making a shallow copy of lists in Python 2 is