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- cadena = input("Introduce una cadena de caracteres: ")
- suma = 0
- digitos = 0
- indice = 0
- for caracter in cadena:
- indice += 1
- if '0' <= caracter <= '9':
- suma += int(caracter)
- digitos += 1
- else:
- if 'a' <= caracter <= 'z' or 'A' <= caracter <= 'Z':
- digitos += 1
- print("Primer no dígito: {0} en posición {1}".format(caracter, len(cadena)))
- break
- if len(cadena) == digitos:
- print("Todos los caracteres son dígitos")
- print("¿Cuántos dígitos?", len(cadena))
- print("¿suma de dígitos?", suma)
- # else:
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