字符串拼接

Question

我试图将字符串和数字与字符串格式化格式，但我得到一个错误

"TypeError: not all arguments converted during string formatting"

这是我的代码

i = 0 
while (i<= 10): 
    print("insert into Member" + "(Mem_ID)") 
    print("values" + "(" + "Mem%d" + ")" %(i)) 
i = i+1 

Answer 1

问题是你如何使用％

正在更换的%d应在报价旁边应有%(var)。

i = 0 
while (i<= 10): 
    print("insert into Member " + "(Mem_ID)") 
    print("values " + "(" + "Mem%d"%(i) + ")") 
    i += 1 

请记住，您应该使用.format()作为当前的方法。

i = 0 
while (i<= 10): 
    print("insert into Member " + "(Mem_ID)") 
    print("values " + "(" + "Mem{}".format(i) + ")") 
    i += 1 

另外要清楚一些你的报价是不需要的。你也可以使用它。

i = 0 
while (i<= 10): 
    print("insert into Member (Mem_ID)") 
    print("values (Mem{})".format(i)) 
    i += 1 

Answer 2

你可以这样做更多simplier如果转换成INT像这样的字符串：

i = 0 
while (i<= 10): 
    print("insert into Member " + "(Mem_ID)") 
    print("values " + "(" + "Mem" + str(i) + ")") 
    i = i+1