python - 无法连接 'str' 和 'instance'

Question

我有一个使用 GUI 元素的程序并返回错误

cannot concatenate 'str' and 'instance' objects

代码是:

def PeopleSearch():
    query = SearchTerm
    query = ('what is '+ query)
    string = ("<center><font size = 14> " + query + ' </font></center><br><img src =picture')
    j = 0
    try:
        gs = GoogleSearch(query)
        gs.results_per_page = 100
        results = gs.get_results()

缩进已经改变。唔。 SearchTerm 基本上来自文本框。

Answer 1

让我用一个更简单的例子重现:

v = 42
query = ('what is ' + v)

你会得到:

TypeError: cannot concatenate 'str' and 'int' objects

但是现在，如果您简单地调用 str:

query = ('what is ' + str(v))

那行得通。所以你只需要确保 str(query) 返回你所期望的。小心，我不知道你在操作什么类型的对象，但你应该检查是否有任何方法可以获取它的字符串表示形式。

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