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 Python Data Type Q&A » List » subset

### 1. Removing a subset of a dict from within a list    stackoverflow.com

This is really only easy to explain with an example, so to remove the intersection of a list from within a dict I usually do something like this:

``a = {1:'', 2:'', ...``

### 2. Using list.reverse() on a subset of a list. "NoneType" object is not iterable    stackoverflow.com

So, I'm trying to append to one list the reverse of a subset of another list. For some reason, the interpreter doesn't seem to be liking it. Here's what ...

### 3. Have I checked every consecutive subset of this list?    stackoverflow.com

I'm trying to solve problem 50 on Project Euler. Don't give me the answer or solve it for me, just try to answer this specific question. The goal is to ...

### 4. Python: Select subset from list based on index set    stackoverflow.com

I have several lists having all the same number of entries (each specifying an object property):

``````property_a = [545., 656., 5.4, 33.]
property_b = [ 1.2,  1.3, 2.3, 0.3]
...
``````
and list with flags ...

### 5. How can I focus on a subset of a list in python    stackoverflow.com

I run across this problem frequently suppose I have a text file that I have read in as as a list using file.readlines() suppose the file looks something like this

``stuff stuff stuff ...``

### 6. Evaluating subset of a list using in operator    stackoverflow.com

I have following test code.

``````a = ['a', 'b', 'c', 'd', 'e']
c = a * 3
b = a
``````
but `b in c` returns False. b is a sub sequence of c and the ...

### 7. Algorithm to get every possible subset of a list, in order of their product, without building and sorting the entire list (i.e Generators)    stackoverflow.com

Practically, I've got a set of objects with probabilities, and I want to look at each possible group of them, in order of how likely it is that they're all true ...

### 8. list is a subset of another list    stackoverflow.com

in Python, given two lists of pairs:

``````listA = [ [1,20], [3,19], [37,11], [21,17] ]
listB = [ [1,20], [21,17] ]
``````
how do you efficiently write a python function which return True if ...