python硬币列表和位置

def validate_index(coins_list, position_number):

你题目的解答代码如下：

def validate_index(coins_list, position_number):
    if  1<=position_number<=9:
        return coins_list[position_number-1] == "$"
    else:
        return False
data = ['-','$','-','-','$','-','$','$','-']
print(validate_index(data, 2))
print(validate_index(data, 3))
print(validate_index(data, -1))
print(validate_index(data, 10))
print(validate_index(data, 0))

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谁出的破题，话都读不通顺

def validate_index(coins_list, position_number):
    try:
        if coins_list[position_number] == '$':
            return True
        else:
            return False
    except:
        return False
data = ['-','-','$','-','$','-','$','$','-','-']
print(validate_index(data,2))
print(validate_index(data,3))
print(validate_index(data,-1))
print(validate_index(data,10))
print(validate_index(data,0))
    

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