Merge items in list with one common Number-CodePudding

If I have a list like this:

[(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 0), (0, 6), (1, 7), (1, 8), (2, 9), (2, 10), (3, 11), (4, 12), (4, 13), (5, 14), (5, 15)]

Is there a way to merge the lists with one common number into sth. like (0,1,2),(0,1,7) etc?

I have tried playiing around with:

   list_1 = [1, 2, 2, 3]
   list_2 = [3, 4]
   set_1 = set(list_1)
   set_2 = set(list_2)
   list_2_items_not_in_list_1 = list(set_2 - set_1)
   combined_list = list_1   list_2_items_not_in_list_1
   print(combined_list)

CodePudding user response：

If you want check all pairs.

from itertools import permutations

lst = [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 0), (0, 6), (1, 7), (1, 8), (2, 9), (2, 10), (3, 11), (4, 12), (4, 13), (5, 14), (5, 15)]
res = [(*a, b[1]) for a, b in permutations(lst, r=2) if a[1] == b[0]]

If you want check pairs with checking of order into lst.

from itertools import combinations

lst = [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 0), (0, 6), (1, 7), (1, 8), (2, 9), (2, 10), (3, 11), (4, 12), (4, 13), (5, 14), (5, 15)]
res = [(*a, b[1]) for a, b in combinations(lst, r=2) if a[1] == b[0]]

CodePudding user response：

I used this now because I am using a python libary function:

for x in range(len(res)):
    k=res[x]
    x=k[0]
    y=k[1]
    z=k[2]
    ang=rdMolTransforms.GetAngleDeg(conf, x, y, z)
    allangle=str("%.0f" % ang)

My output is now:

How do i check if the string contains the number 118? and print how often it appears in my results.