flaver_list = ['vanilla', 'chocolate', 'pecan', 'storawberry']

for i in range(len(flaver_list)):
    flaver = flaver_list[i]
    print('%d: %s' % (i+1, flaver))

>>>
1: vanilla
2: chocolate
3: pecan
4: storawberry

for i, flaver in enumerate(flaver_list):
    print('%d: %s' % (i+1, flaver))

>>>
1: vanilla
2: chocolate
3: pecan
4: storawberry

for i, flaver in enumerate(flaver_list, 1):  #Übergeben Sie Argument 1 zur Aufzählung
    print('%d: %s' % (i, flaver))

>>>
1: vanilla
2: chocolate
3: pecan
4: storawberry
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