# ex05_herrera.py

def bMajusculaAminuscula(cU):
    if cU == cU.lower():
        return False
    else:
        return True

def main():
    szCadena = "aBcDeF 1234 xYz"

    for cC in szCadena:
        if bMajusculaAminuscula(cC):
            print("Convertit %c a %c"%(cC,cC.lower()))
main()