I need to merge two lists of tuples with expected result is some kind of intersection between two lists, I already have the DUMB solution.
List 1 has incomplete value in the last element of tuple.
List 2 has tuples that list 1 doesn't have and have tuples with complete value
Result...hmmm well, best described in example:
l1 = [('4',), ('6',)]
l2 = [('3', '1'), ('4', '23'), ('6', '34')]
#my dumb solution
def mymerge(l1,l2):
l3 = []
for x in l2:
if x[0] in [ y[0] for y in l1 ]:
l3.append(x)
return l3
result = mymerge(l1,l2)
#result is what expected-> [('4','23'),('6','34')]
My question: What other solution beside my dumb solution ?
really curious...
Tnx
A list comprehension should work:
result = [ l for l in l2 if (l[0],) in l1]
Similarly, you can use the inbuilt filter function
result = filter(lambda x: (x[0],) in l1, l2)
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