| | I have input consisting of a list of nested lists like this:
l = [[[[[39]]]], [1, 2, 3], [4, [5, 3], 1], [[[[8, 9], 10], 11], 12]]
I want to sort this list ... | i'm trying to sort this nested list by inner's list first element:
ak = [ ['a',1],['E',2],['C',13],['A',11],['b',9] ]
ak.sort(cmp=lambda x, y: cmp(x[0], y[0]))
for i in ak: {
print i
}
by default python considers A > ... | I'm a python newb and am having trouble groking nested list comprehensions. I'm trying to write some code to read in a file and construct a list for each ... | I know what I'm looking for. I want python to tell me which list it's in.
Here's some pseudocode:
item = "a"
nested_list = [["a", "b"], ["c", "d"]]
list.index(item) #obviously this doesn't work
here I ... | I want to get the union of 2 nested lists plus an index to the common values.
I have two lists like A = [[1,2,3],[4,5,6],[7,8,9]] and B = [[1,2,3,4],[3,3,5,7]] but the length ... | I have a nested list comprising ~30,000 sub-lists, each with three entries, e.g.,
nested_list = [['x', 'y', 'z'], ['a', 'b', 'c']].
I wish to create a function in order to output this data ... | I'm making a for loop within a for loop. I'm looping through a list and finding a specific string that contains a regular expression pattern. Once I find the line, I ... | | Simply put! there is this list say LST = [[12,1],[23,2],[16,3],[12,4],[14,5]] and i want to get all the minimum elements of this list according to its first element of the inside list. ... | So I'm trying to generate a nested list in Python based on a width and a height. This is what I have so far:
width = 4
...
| If I had two strings, 'abc' and 'def', I could get all combinations of them using two for loops:
for j in s1:
for k in s2:
print(j, ...
| I was playing around with list comprehensions to get a better understanding of them and I ran into some unexpected output that I am not able to explain. I haven't found ... | reworked to hopefully make it clearer.
my_list = [[1,2],[1,3],[1,3],[1,3]]
my_var = 7
My goal is to be able to see if my_var is larger than all of the positions at my_list[0][1] and my_list[1][1] and ... | I have a list like [["foo", ["a", "b", "c"]], ["bar", ["a", "b", "f"]]]
and I'm wanting to split it out so I can get a count of the total number of As, ... | Working with a couple of lists, iterating over each. Here's a code segment:
self.links = []
self.iter=iter(self.links)
for tgt in self.links:
for link in self.mal_list:
...
| For some reason, pyparsing isn't nesting the list for my string:
>>> rank = oneOf("2 3 4 5 6 7 8 9 T J Q K A")
>>> suit = oneOf("h c d ...
| I am having some trouble with the following script. It should make 3 copies of the following list so that they can be modified independently. However, it seems to be creating ... | my_list = [ [1,2,3,4,5,6], [1,3,4],[34,56,56,56]]
for item in my_list:
var1,var2,var3,var4,var5,var6 = None
if len(item) ==1:
var1 ...
| As much as I love Python, the reference and deepcopy stuff sometimes freaks me out.
Why does deepcopy not work here:
>>> import copy
>>> a = 2*[2*[0]]
>>> a
[[0, 0], [0, 0]]
>>> b = ...
| I have been trying to make a block of code that finds the index of the largest bid for each item. Then I was going to use the index as a ... | In Python, I want to list all files in a set of directories. The best I'd like to get is a list. But at most I managed to make a nested ... | I am trying to create a properly nested list using the following code (following Sphinx and docutils docs):
1. X
a. U
b. V
c. ...
| Consider this:
list = 2*[2*[0]]
for y in range(0,2):
for x in range(0,2):
if x ==0:
list[x][y]=1
else:
...
| Hello I have a loop which goes counts different records in my MySQL database and then saves the numbers to a list. Here is the list:
[1L, 2L, 2L, 5L, 4L, 1L, ... | I'm trying to write a function that adds two matrices to pass the following doctests:
>>> a = [[1, 2], [3, 4]]
>>> b = [[2, 2], [2, 2]]
...
|
Possible Duplicate:
Flatten (an irregular) list of lists in Python
I have the following list --
[1,[2,3],4,[5,[6,7]]]
And I need to make it flat --
[1,2,3,4,5,6,7]
To do this, I ... | Eventhough I write in python I think the abstract concept is more interesting to me and others. So pseudocode please if you like :)
I have a list with items from one ... |
Possible Duplicate:
How can I turn a list into an array in python?
How can I turn a list such as:
data_list = [0,1,2,3,4,5,6,7,8]
into a list of ... | I have a huge mess of a nested list that looks something like this, just longer:
fruit_mess = [['watermelon,0,1.0\n'], ['apple,0,1.0\n'], ['"pineapple",0,1.0\n'], ['"strawberry, banana",0,1.0\n'], ['peach plum pear,0,1.0\n'], ['"orange, grape",0,1.0\n']]
Ultimately I want something that ... | I'm stuck on a small but tricky problem since yesterday.
What I have is a (possibly infinitely) nested list like this:
[1,[2,[3,4]]]
or [[1,2],[3,4]] and so on.
On each level the lists consist of ... | I have two def functions that I call in a nested fashion and want to call the second in a loop. I currently can only figure out the syntax for how ... | I have the following code
class Board:
def __init__(self, size=7):
self._size = size
self._list, self._llist ...
|
Possible Duplicate:
Flatten (an irregular) list of lists in Python
Hi I was working out with nested lists in python and found this to be a ... | I am writing code to parse a tilemap map from a config file. The map is in the format:
1|2|3|4
1|2|3|4
2|3|4|5
where the numbers represent tiles.
I then make this into an integer array:
[[int(tile) for ...
| I have a binary tree class like this:
class BinaryTree:
def __init__(self, data, left=None, right=None):
self.data = data
self.left = left
self.right = right
Now ... | I want to add a dictionary to a nested list within a nested list.
so;
['master_list 1', ['list 1', ['sub_list 1']], ['list 2'], ['list 3']]
would end up like;
['master_list_1', ['list_1', ['sub_list_1',{key_1:value_1}]], ['list_2'], ['list_3']]
I know ... | Ok, with the same program previously I've now hit a problem I should have anticipated; the grid (of variable width and height) is constructed based on a code to alternate the ... | It's possible to create an infinite nested list in Python. That's clear and, although not popular and definitely not useful is a known fact.
>>> a = [0]
>>> a[0] = a
>>> a
[[...]]
>>> ...
| I'm having trouble wrapping my head around dealing with lists within lists in python (I am rather new at programming).
Now how would I access each nested list position and then manipulate ... | I want to understand nested list comprehension.
Below, I listed a list comprehension expression and their for loop equivalent.
I wonder if my understanding is correct on those.
For example,
[(min([row[i] for ...
| Can anyone tell me how can I call for indexes in a nested list?
Generally I just write:
for i in range (list)
but what if I have a list with nested lists ... | >>> c = 'A/B,C/D,E/F'
>>> [a for b in c.split(',') for (a,_) in b.split('/')]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 1, in <listcomp>
ValueError: ...
| Is thery any nice compact way of adding an item to the last nested list of an outer list.
I.e:
a=[1,2,[3,4,[5,6]]]
and after the insertion of 7 i want my list to become
a=[1,2,[3,4,[5,6,7]]]
| | | Im a beginner, just started using python recently..I am having trouble getting this code to work, I have: a = [[['cat', ['pet', 'quiet', 'lazy', 'small', 'meow']], ['dog', ['small', 'lazy', 'bark', 'adorable', 'pet']], ['tiger', ['big', 'smart', 'heavy', 'wild']], ['lion', ['pet', 'wild', 'smart', 'heavy', 'cool']]] b is the list of all adjs that referred to animals in list a b = ['pet','quiet','lazy', 'small', ... | | Below is a demonstration of what's going on. First I use the same method that you use in your code to generate nested lists. When I check the identity of the lists(which is unique for each object), they have the same identity because they are the same object... >>> l = [[]]*10 >>> for sub_list in l: id(sub_list) 18621624 18621624 18621624 ... | type checking is discouraged by much of the python community as its rather un-pythonic but here it fits the purpose. And your solution is kinda bad because it requires reading your huge list into memory as a string then going through that string replacing every '[' and ']' with ',' this can break the string and cause horrid little bugs, the ... | ## First Last Phone list1 = ["John","Smith","555-555-5555"] list2 = ["Joe", "Jackson", "666-666-6666"] list3 = ["Jack", "Jimbo", "777-777-7777"] nestedList.append(list1) nestedList.append(list1) nestedList.append(list1) ##At this point I could choose to sort the nestedList by first name, last name, or phone number - how could I easily do this? nestedList.sort() ... | | nested list nightmares by w M w Wed Jul 14, 2010 4:11 pm Here is a problem copy pasted from another thread: "x kids will be eating dinner at n tables for w weeks. They change seating arrangements every week in such a way to minimize sitting with people that they have sat with before. The kids are split as ... | im about a week into learning python and ive been working on my first proper script. i have no idea why it says ruuduvaluecopy1 is unbound in the end of the code. i made several test printouts to see if its branching properly, and it all worked as per descriptions below. any help would be appreciated Code: Select all def reasumma(ruuduvalue,reasumiter): ... | We want you to write a recursive procedure recursiveRef that would work as follows: >>> recursiveRef(nested, [3, 1]) 9 >>> recursiveRef(nested, [1, 1, 0]) 5 >>> recursiveRef(nested, [1, 1]) [5, 6] Note that the indices are lists of integers. What should the base case for the recursion be? Hint 0: What should be the value of recursiveRef(anything, [])? Assume that the ... | Problem with a nested list by Jary316 Tue Sep 30, 2008 8:46 pm Hello everyone, I have a nested list, and I want to change one value but it changes the value in the all the lists inside the nested list. Code: Select all def play(window, BOARDSIZE): # Get the current score of one line (-1 ... | | hi, I am new to python an I am enjoying learning the language. I wanted to know how to go about identifying whether the element of a list is a string or another list itself. FOr example, ['string1',['one','two','three'],['first','second']] So, how do I determine that the second element is a list having 3 other elements. Thanks, Gbads |
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