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 Python Data Type Q&A » List » boolean

### 1. Python nested lists and recursion problem    stackoverflow.com

I posted this question under an alter yesterday not realising my account was still active after 9 months, sorry for the double post, i've fixed an error in my example pointed ...

### 2. What is the most 'pythonic' way to logically combine a list of booleans?    stackoverflow.com

I have a list of booleans I'd like to logically combine using and/or. The expanded operations would be:

``````vals = [True, False, True, True, True, False]

# And-ing them together
result = True
for ...``````

### 3. Interpretation of range(n) and boolean list, one-to-one map, simpler?    stackoverflow.com

``````#!/usr/bin/python
#
# Description: bitwise factorization and then trying to find
# an elegant way to print numbers

# Source: http://forums.xkcd.com/viewtopic.php?f=11&t=61300#p2195422
# bug with large numbers such as 99, but main point in simplifying it
#
def primes(n):
...``````

### 4. Merge lists that share common elements    stackoverflow.com

My input is a list of lists. Some of them share common elements, eg.

``````l = [['a','b','c'],['b','d','e'],['k'],['o','p'],['e','f'],['p','a'],['d','g']]
``````
I need to merge all lists, that share a common element, and repeat this procedure as ...

### 5. every element of list is True boolean    stackoverflow.com

I know that

``````all(map(compare,new_subjects.values()))==True
``````
would tell me if every element of the list is True. However, how do I tell whether every element except for one of them is True?

### 6. Is this boolean test pythonic for limiting a list's members to a set of legal values?    stackoverflow.com

I have a list of legal words:

``````legal = ['osama','bin','laden']
``````
A function accepts a list that must contain words in the legal list & returns true if every member of the list is ...

### 7. Python: sub list of items depending on a certain value of the items, e.g. boolean    stackoverflow.com

I have a list of similar objects, some of them have a certain value set, here more specifically a boolean flag:

``myList = [WhatEver(..., True, ...), WhatEver(..., True, ...), WhatEver(..., False, ...), ...``