import pyutil as pyu
pyu.get_local_pyinfo()

print(pyu.ps2("python-dotenv"))

from typing import List

class Solution:
  def firstUniqChar(self, s: str) -> int:
    count = Counter(s)

    for i, c in enumerate(s):
      if count[c] == 1:
        return i

    return -1

new Solution().firstUniqChar()