在 Flask 中找不到提供的模块“builtins”的根路径

Question

我有 python3.5.2 作为我的默认 python 并且我安装了flask。然后我写了一个基本的flaskapp.py来尝试，我遇到了这个错误：

运行时错误：找不到提供的模块“内置”的根路径。发生这种情况的原因是该模块来自不提供文件名信息的导入挂钩，或者因为它是命名空间包。在这种情况下，需要显式提供根路径。

这是我的flaskapp.py：

from flask import Flask
from flask import request,render_template

app = Flask(__name__)
@app.route('/')
def home():
    return render_template('pages/pages/home/home.html')

if __name__ == '__main__' :
    app.run()

追溯：

Traceback (most recent call last): 
File "<input>", line 6, in <module> File "C:\....\flask\app.py", line 345, 
in init root_path=root_path) 
File "C:\...\flask\helpers.py", line 843, 
in init root_path = get_root_path(self.import_name) 
File "C:\...\flask\helpers.py", line 721, 
in get_root_path 'provided.' % import_name) RuntimeError: 

Answer 1

这个句子

'找不到提供的模块“内置”的根路径'

is they trouble maker.. I assume you are running this in some IDE line by line, because I encoutered the same problem using IntelliJ and the python console.

Please check the value of the argument __name__ in this case. This will probably have the value "builtins". However, when you actually run the full script, then the __name__ argument will be set to __main__.