字符串拼接

Question

我試圖將字符串和數字與字符串格式化格式，但我得到一個錯誤

"TypeError: not all arguments converted during string formatting"

這是我的代碼

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

Answer 1

問題是你如何使用％

正在更換的%d應在報價旁邊應有%(var)。

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

請記住，您應該使用.format()作爲當前的方法。

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報價是不需要的。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

你可以這樣做更多simplier如果轉換成INT像這樣的字符串：

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