Question

我正在尝试创建一个程序，要求用户输入他/她的名字并将输入记录到列表中（正在努力进入字典，但似乎我做了一个嘘声！）但它返回＆＃ 34; TypeError：只能将列表（不是＆＃34; str＆＃34;）连接到列表＆＃34;。以下是代码。提前谢谢。

namedic = []
while True:
    print ("Please, enter your name:")
    name = input()
    if len(name) > 3:
        print ("Welcome")
    else:
        print ("Ew, your name have less than 4 letters! Gross! Try a new one")
        continue
    namedic = namedic + name
print ("Ah, your name have at least 4 words, good name.")
for name in namedic:
    print (name)

Answer 1

如错误所示，+运算符不用于将元素追加到列表中。您可以使用append方法：

namedic.append(name)

Answer 2

#your code should rather be like this;
namedic = []
while True:
    print ("Please, enter your name:")
    name = input()
    if len(name) > 3:
        print ("Welcome")
    else:
        print ("Ew, your name have less than 4 letters! Gross! Try a new one")
        continue
    namedic.append(name)
print ("Ah, your name have at least 4 words, good name.")
for name in namedic:
    print (name)

将输入添加到列表中时出错

2 个答案: