I have three lists:
A = [["a", "b", "c"],["f", "b", "a"]]
numbers = [[1, 2 ,3], [1, 2, 3]]
frequency = [[0.2, 0.5, 0.7], [0.1, 0.8, 0.9]]
and want to obtain a combined list as:
comb = [[("a",1,0.2), ("b",2,0.5), ("c",3,0.7)],[("f",1,0.1), ("b",2,0.8), ("a",3,0.9)]
I tried using join, but sublists are not merging as desired. How could I get the combined list? Thanks!
You can use zip twice:
A = [["a", "b", "c"],["f", "b", "a"]]
numbers = [[1, 2 ,3], [1, 2, 3]]
frequency = [[0.2, 0.5, 0.7], [0.1, 0.8, 0.9]]
output = [list(zip(*zipped)) for zipped in zip(A, numbers, frequency)]
print(output)
# [[('a', 1, 0.2), ('b', 2, 0.5), ('c', 3, 0.7)], [('f', 1, 0.1), ('b', 2, 0.8), ('a', 3, 0.9)]]
Alternatively, you can use itertools.starmap to get an iterator (of iterators):
from itertools import starmap
output = starmap(zip, zip(A, numbers, frequency))
for subzip in output:
print(*subzip)
# ('a', 1, 0.2) ('b', 2, 0.5) ('c', 3, 0.7)
# ('f', 1, 0.1) ('b', 2, 0.8) ('a', 3, 0.9)
Using list comprehension (although J1-lee's answer is more concise):
result=[[(i,k,j) for i,k,j in zip(q,w,e)]
for q,w,e in zip(A,numbers,frequency)]
Using for loop:
result=[]
for q,w,e in zip(A,numbers,frequency):
temp=[]
for i,k,j in zip(q,w,e):
temp.append((i,k,j))
result.append(temp)
