Python错误 - ImportError：没有名为'webapp2'的模块(Python Error - ImportError: no module named 'webapp2')

 我是Python的初学者，并且在我的机器上本地运行我的python googleppengine代码非常困难。 
 
 我的代码如下所示： 
 
    import json
    import urllib
    import os
    import webapp2
    from google.appengine.ext.webapp import template
    import datetime
    from google.appengine.ext import db


    class Events(db.Model):
        venue_name = db.StringProperty()
        address = db.StringProperty()
        id = db.StringProperty()
        venue_id = db.StringProperty()

        # hire_date = db.DateProperty()
        # attended_hr_training = db.BooleanProperty()

    class eventSearch(webapp2.RequestHandler):  
def get(self):
    base_url = 'http://api.eventful.com/json/events/search?app_key=zGtDX6cwQjCRdkf6&l=dublin&?q=music'
    response = urllib.urlopen(base_url)
    html = response.read()
    html = json.loads(html)
    result = html['venues']
    result1 = result['venue']
 
 当我使用命令“python file.py”在cmd提示符下运行此代码时，我收到以下错误： 
 
Traceback <most recent call last>:
File "file.py", line 4, in <module>
import webapp2
ImportError: No module named 'webapp2'
 
 我有1.创建一个PythonPath中建议在如何添加到Windows 7中的pythonpath？ 在我的系统变量的目录中：C：\ Python33 \ DLLs; C：\ Python33 \ Lib; C：\ Python33 \ Lib \ lib2to3; C：\ Program Files（x86）\ Google \ google_appengine; C：\ Program Files（x86 ）\谷歌\ google_appengine \ lib中; 
 
 然后，我也将下面的两个目录添加到我的“PATH”变量中，正如答案中推荐的那样 - 即使我没有安装webapp2，导入webapp2也可以在google-app-engine上运行 
 C：\ Program Files（x86）\ Google \ google_appengine \; C：\ Program Files（x86）\ Google \ google_appengine \ lib 
 
 编辑：在提供的答案中的建议后，我也意识到，GAE不支持3.3版本的Python，我试图在我的问题的前一部分运行它。 在卸载Python33并安装Python27之后，改变我的系统变量以反映新的Python27，我仍然遇到问题，并且我的代码不会与GAE启动器一起上传。 我在我的日志控制台（GAE启动器）中收到以下错误： 
 
2013-04-14 22:59:19 Running command: "['C:\\Python27\\pythonw.exe', 'C:\\Program Files (x86)\\Google\\google_appengine\\dev_appserver.py', '--skip_sdk_update_check=yes', '--port=8080', '--admin_port=8001', 'C:\\Users\\Karen\\Desktop\\Development\\projects\\file']"
Traceback (most recent call last):
  File "C:\Program Files (x86)\Google\google_appengine\dev_appserver.py", line 193, in     <module>
    _run_file(__file__, globals())
  File "C:\Program Files (x86)\Google\google_appengine\dev_appserver.py", line 189, in _run_file
    execfile(script_path, globals_)
  File "C:\Program Files     (x86)\Google\google_appengine\google\appengine\tools\devappserver2\devappserver2.py", line 30, in <module>
    from google.appengine.datastore import datastore_stub_util
  File "C:\Program Files     (x86)\Google\google_appengine\google\appengine\datastore\datastore_stub_util.py", line 45,     in <module>
    from google.appengine.api import api_base_pb
  File "C:\Program Files     (x86)\Google\google_appengine\google\appengine\api\api_base_pb.py", line 20, in <module>
    from google.net.proto import ProtocolBuffer
  File "C:\Program Files (x86)\Google\google_appengine\google\net\proto\ProtocolBuffer.py", line 22, in <module>
    import httplib
  File "C:\Python27\lib\httplib.py", line 71, in <module>
    import socket
  File "C:\Python27\lib\socket.py", line 47, in <module>
    import _socket
ImportError: Module use of python25.dll conflicts with this version of Python.
2013-04-14 22:59:21 (Process exited with code 1)
 
 感谢您为我提供的任何帮助。 

I am a beginner to Python and am having great difficulty in running my python googleppengine code locally on my machine. 
 
My code looks as follows:
 
import json
import urllib
import os
import webapp2
from google.appengine.ext.webapp import template
import datetime
from google.appengine.ext import db


class Events(db.Model):
    venue_name = db.StringProperty()
    address = db.StringProperty()
    id = db.StringProperty()
    venue_id = db.StringProperty()

    # hire_date = db.DateProperty()
    # attended_hr_training = db.BooleanProperty()

class eventSearch(webapp2.RequestHandler):  
    def get(self):
        base_url = 'http://api.eventful.com/json/events/search?app_key=zGtDX6cwQjCRdkf6&l=dublin&?q=music'
        response = urllib.urlopen(base_url)
        html = response.read()
        html = json.loads(html)
        result = html['venues']
        result1 = result['venue']
 
When I run this code in my cmd prompt with command "python file.py", I receive the following error: 
 
Traceback <most recent call last>:
File "file.py", line 4, in <module>
import webapp2
ImportError: No module named 'webapp2'
 
I have 1. Created a PythonPath as suggested in How to add to the pythonpath in Windows? within my system variables with directories: C:\Python33\DLLs;C:\Python33\Lib;C:\Python33\Lib\lib2to3;C:\Program Files (x86)\Google\google_appengine;C:\Program Files (x86)\Google\google_appengine\lib; 
 
I have then also added both of the below directories into my "PATH" variable also, as recommended within answer - import webapp2 works on google-app-engine even though I don't have webapp2 installed
 C:\Program Files (x86)\Google\google_appengine\;C:\Program Files (x86)\Google\google_appengine\lib
 
EDIT: After suggestions within the answers provided I too have realized that GAE does not support version 3.3 of Python I was trying to run it with in my previous part of my question. After uninstalling Python33 and installing Python27 instead, changing my system variables to reflect the new Python27, I am still having issues and my code will not upload with the GAE launcher. I receive the following errors within my log-console (GAE Launcher): 
 
2013-04-14 22:59:19 Running command: "['C:\\Python27\\pythonw.exe', 'C:\\Program Files (x86)\\Google\\google_appengine\\dev_appserver.py', '--skip_sdk_update_check=yes', '--port=8080', '--admin_port=8001', 'C:\\Users\\Karen\\Desktop\\Development\\projects\\file']"
Traceback (most recent call last):
  File "C:\Program Files (x86)\Google\google_appengine\dev_appserver.py", line 193, in     <module>
    _run_file(__file__, globals())
  File "C:\Program Files (x86)\Google\google_appengine\dev_appserver.py", line 189, in _run_file
    execfile(script_path, globals_)
  File "C:\Program Files     (x86)\Google\google_appengine\google\appengine\tools\devappserver2\devappserver2.py", line 30, in <module>
    from google.appengine.datastore import datastore_stub_util
  File "C:\Program Files     (x86)\Google\google_appengine\google\appengine\datastore\datastore_stub_util.py", line 45,     in <module>
    from google.appengine.api import api_base_pb
  File "C:\Program Files     (x86)\Google\google_appengine\google\appengine\api\api_base_pb.py", line 20, in <module>
    from google.net.proto import ProtocolBuffer
  File "C:\Program Files (x86)\Google\google_appengine\google\net\proto\ProtocolBuffer.py", line 22, in <module>
    import httplib
  File "C:\Python27\lib\httplib.py", line 71, in <module>
    import socket
  File "C:\Python27\lib\socket.py", line 47, in <module>
    import _socket
ImportError: Module use of python25.dll conflicts with this version of Python.
2013-04-14 22:59:21 (Process exited with code 1)
 
Thank you for any help that you can provide me. 

原文：https://stackoverflow.com/questions/15998801