Python列表统计重复元素

方法一

• 使用list的内置方法list.count()

  l = [1, 1, 2, 3, 3]
  sl = set(l)
  for i in sl:
      if l.count(i) > 1:
          print("元素{},重复{}次".format(i, l.count(i)))

方法二

• 使用python内置方法collections的Count()模块

  from collections import Counter
  l = [1, 1, 2, 3, 3]
  cl = Counter(l)
  for k, v in cl.items():
      if v > 1:
          print("元素{}, 重复{}次".format(k, v))

方法三

• 使用for循环

  l = [1, 1, 2, 3, 3]
  sl = set(l)
  d = {}
  for s in sl:
      count = 0
      for i in l:
          if i == s:
              count += 1
              d[s] = count
  for k, v in d.items():
      if v > 1:
          print("元素{}, 重复{}次".format(k, v))