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List is contained in other list

Checks if the elements of the first list are contained in the second one regardless of order.

Use count() to check if any value in a has more occurrences than it has in b.
Return False if any such value is found, True otherwise.

def is_contained_in(a, b):
  for v in set(a):
    if a.count(v) > b.count(v):
      return False
  return True

is_contained_in([1, 4], [2, 4, 1]) # True

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