这个函数主要统计字母个数、数字个数、汉字和其他字符的个数（注意汉字和其他字符一起统计）

GO语言的代码有

func main() {

   searchCount("Golang python")
   searchCount("我哼着" + "12345,54321" + "不小心踩了一坨屎，It smells good")

}
func searchCount(src string) {
   letters := "abcdefghijklmnopqrstuvwxyz"
   letters = letters + strings.ToUpper(letters)
   nums := "0123456789"

   numCount := 0
   letterCount := 0
   othersCount := 0

   for _,i := range src {
      switch {
      case strings.ContainsRune(letters,i) == true:
         letterCount += 1
      case strings.ContainsRune(nums,i) == true:
         numCount += 1
      default:
         othersCount += 1
      }

   }
   fmt.Println(letterCount,numCount,othersCount)
}

python代码简洁了一点

def  searchCount(src):
    numCount=0
    letterCount=0
    otherCount=0
    for i in src:
        if  i.isdigit():
            numCount+=1
        elif i.isalpha():
             letterCount+=1
        else:
            otherCount+=1
    print(letterCount,otherCount)

searchCount("Golang python")
a="我哼着" + "12345,54321" + "不小心踩了一坨屎，It smells good"
searchCount(a)