for循环:遍历列表, 打印索引和元素
#遍历列表, 打印索引和元素
names = ['Tom', 'Jerry', 'Marry']
for index, name in enumerate(names):
print('names[{}] = {}'.format(index, name))
打印结果:
names[0] = Tom
names[1] = Jerry
names[2] = Marry
# 字符转数字
rmb = input('价格:’)
if rmb.isdigit():
rmb = int(rmb)
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