這個程序不斷崩潰，我無法解決爲什麼？

Question

g = raw_input("Any other items enter the price: $") 
if (g.isalpha()): 
    g = 0.0 
if (g.isdigit()): 
    g = g 
else: 
    g = 0.0 

Pat=(raw_input('And how many of this item:')) 
if (Pat.isalpha()): 
    Pat = 0.0 
if (Pat.isdigit()): 
    Pat = Pat 
else: 
    Pat = 0.0 

g_ = (Pat * g) 
Total = (a_ + b_ + c_ + d_ + e_ + f_ + g_) 
print'Total: $',Total, ''' 

它使返回錯誤：

TypeError: can't multiply sequence by non-int of type 'str'

Answer 1

此行只是分配一個字符串返回

if (Pat.isdigit()): 
    Pat = Pat 

我假設你的意思

if (Pat.isdigit()): 
    Pat = int(Pat)