如何找到我使用的RxPY版本？

Question

I can't remember which version of RxPY I installed and the obvious does not seem to work:

In[33]: import rx

In[34]: rx.__version__
Traceback (most recent call last):
  File "C:\Program Files\Python\2.7\lib\site-packages\IPython\core\interactiveshell.py", line 3035, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-34-b9c56e77da3a>", line 1, in <module>
    rx.__version__
AttributeError: 'module' object has no attribute '__version__'

In[35]: any(map(lambda x: 'version' in x.lower(), dir(rx)))
Out[35]: False

Edit

Also, help doesn't contain the version:

In[38]: help(rx)
Help on package rx:

NAME
    rx

FILE
    c:\Program Files\python\2.7\lib\site-packages\rx\__init__.py

PACKAGE CONTENTS
    abstractobserver
    anonymousobservable
    anonymousobserver
    autodetachobserver
    backpressure (package)
    blockingobservable
    checkedobserver
    concurrency (package)
    disposables (package)
    internal (package)
    joins (package)
    linq (package)
    notification
    observable
    observeonobserver
    observer
    scheduledobserver
    subjects (package)
    testing (package)

DATA
    Future = None
    asyncio = None
    config = {'Future': None, 'Lock': <function RLock>, 'asyncio': None}

Answer 1

If you are using pip then just run pip list .

This will show you the installed packages and their versions.

You are looking for a package called Rx . You could combine with grep (depending on OS / Shell). See screenshot below: