30秒学会 Python 片段 – 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.

代码实现

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

使用样例

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

翻译自：https://www.30secondsofcode.org/python/s/is-contained-in