擅长:python、mysql、java
<p>你的gtin\u连接是元组,如果你想要列表,你应该使用方括号。您可以使用以下示例测试变量类型:</p>
<pre><code>gtin1 = int(input("Enter your first digit... "))
gtin2 = int(input("Enter your second digit... "))
gtin3 = int(input("Enter your third digit... "))
gtin4 = int(input("Enter your fourth digit... "))
gtin5 = int(input("Enter your fifth digit... "))
gtin6 = int(input("Enter your sixth digit... "))
gtin7 = int(input("Enter your seventh digit... "))
gtin_join = (gtin1, gtin2, gtin3, gtin4, gtin5, gtin6, gtin7)
print(type(gtin_join))
gtin_join = [gtin1, gtin2, gtin3, gtin4, gtin5, gtin6, gtin7]
print(type(gtin_join))
if len(gtin_join) == 7:
print 7
</code></pre>