CODEWITHSUNDEEP
pythonpython-2.7python-3.xtuples
pynoob
pynoob

Reputation: 21

Iterating through a list of tuples

Iterating through a list of tuples [('a', 4), ('b', 5), ('c', 1), ('d', 3), ('e', 2), ('f',6)]

attempting to get the matching pair as output

Any guidance would be greatly appreciated.

here is what I have so far:

data = [('a', 4), ('b', 5), ('c', 1), ('d', 3), ('e', 2), ('f',6)]
new_list = []
vowels = 'aeiou'
consonants = 'bcdfghjklmnpqrstvxw'
consonants = list(consonants)
vowels = list(vowels)
for idx, (a,b) in enumerate(data):
    if (a) in vowels or (a) in consonants and (b) % 3 == 0:
        new_list.append(idx)
print tuple(new_list)

This where I am getting stuck

Upvotes: 1

Views: 6167

Answers (3)

Allen Qin
Allen Qin

Reputation: 19947

a = [('a', 4), ('b', 5), ('c', 1), ('d', 3), ('e', 2), ('f',6)] 
c = np.asarray([[int(e[0] in 'aeiou'), e[1]] for e in a])
e = (c[:,None] + c) % 3
f = np.asarray(np.where((e[...,0]%2==0) & (e[...,1]==0))).T.tolist()
print set([tuple(sorted(i)) for i in f if i[0]!=i[1]])

set([(1L, 2L), (3L, 5L), (0L, 4L)])

Upvotes: 0

nick
nick

Reputation: 853

data = [('a', 4), ('b', 5), ('c', 1), ('d', 3), ('e', 2), ('f',6)]
new_list = []
vowels = 'aeiou'
for idx,(a,b) in enumerate(data):
     for _idx,(_a,_b) in enumerate( data[idx+1:]):
           if bool(a in vowels)==bool(_a in vowels) and(b+_b)%3==0:
               new_list.append((idx,_idx+idx+1))

Upvotes: 0

Burhan Khalid
Burhan Khalid

Reputation: 174624

Here is a simple way to do it, which you can expand on later:

nums = [('a', 4), ('b', 5), ('c', 1), ('d', 3), ('e', 2), ('f',6)]
vowels = ['a','e','i','o','u']
results = []
for k,v in enumerate(nums):
    for i,j in enumerate(nums[:]):
        if v == j:
            continue
        if v[0] in vowels and j[0] in vowels:
            if (v[1]+j[1]) % 3 == 0:
                if (i,k) not in results:
                    results.append((k,i))
        if v[0] not in vowels and j[0] not in vowels:
            if (v[1]+j[1]) % 3 == 0:
                if (k,i) not in results:
                    results.append((i,k))
print(results)

Upvotes: 2

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