“from flask import flask”抛出语法错误Python

Question

我刚刚使用Flask（来自Flask的文档）在Python中尝试了一个简单的hello world应用程序。我用“pip install Flask”安装烧瓶。我卸载了它并重新安装。不过，问题依然存在。

代码：

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello World!"

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

错误：

Traceback (most recent call last):
  File "HelloWorld.py", line 1, in <module>
    from flask import Flask
  File "C:\Python32\lib\site-packages\flask\__init__.py", line 17, in <module>
    from werkzeug.exceptions import abort
  File "C:\Python32\lib\site-packages\werkzeug\__init__.py", line 154, in <module>
    __import__('werkzeug.exceptions')
  File "C:\Python32\lib\site-packages\werkzeug\exceptions.py", line 111
    return u'<p>%s</p>' % escape(self.description)
                      ^
SyntaxError: invalid syntax