import os

def printdir(path, livello=0):
    print('  '*livello + path)
    files = os.listdir(path)
    for f in files:
        if f[0] == '.':
            continue
        path_completo = os.path.join(path, f)
        if os.path.isdir(path_completo):
            printdir(path_completo, livello+1)
        else:
            print('  '*livello, f)


def cercaFile(path, sottostringa, livello=0):
    files = os.listdir(path)
    for f in files:
        path_completo = os.path.join(path, f)
        if sottostringa in f:
            print( '  '*livello + path_completo )
        if os.path.isdir(path_completo):
            cercaFile(path_completo, sottostringa, livello+1)

def dirSize(path, livello=0):
    print('  '*livello + 'entering ' + path)
    size = 0
    files = os.listdir(path)
    for f in files:
        path_completo = os.path.join(path, f)
        if os.path.isdir(path_completo):
            size += dirSize(path_completo, livello+1)
        else:
            size += os.stat(path_completo).st_size
    print('  '*livello + 'exiting -> ' + str(size))
    return size
            

def sommaLista(L):
    somma = 0
    for i in L:
        somma += i
    return somma

def sommaListaRic(L, livello=0):
    print('  '*livello + 'entering ' + str(L))
    if len(L) == 0:
        ris = 0
    else:
        ris = L[0] + sommaListaRic(L[1:], livello+1)
    print('  '*livello + 'exiting ' + str(ris))
    return ris











if __name__ == '__main__':
    print(sommaListaRic([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]))