date:20160113

SSL certification fails / tweepy

2016-01-13 Thread K. Elo


Dear list members!

I have written I small python script for twitter mining utilising the 
'tweepy' library. Since a couple of days I cannot use the script 
anymore, due to a "ssl certificate verification failed" error. The 
authentication with Twitter API succeess, but when I try to run the 
following code:


--- snip ---

api=tweepy.API(auth)   # 'auth' is my authentification token
print("Receiving network members for '", user_to_track, "' ... ")
network_members = []

#
# The user wants to get all followers of a twitter user
#
while True:
   try:
  for page in tweepy.Cursor(api.followers_ids, user_to_track).pages():
 network_members.extend(page)
 print("Current follower count: ", len(network_members))
 if len(page)==5000: time.sleep(60)
  break
   except tweepy.TweepError as e:
  # Did we exceed the rate limit?
  if e.message[0]["code"]==88:
 # Yes -> sleep for 15 minutes and then continue
 print("Rate limit exceeded, sleeping for 15 minutes ...")
 time.sleep(15*60)
 continue
  else:
 # Something else went wrong -> break out from the loop!
 print("Exception: ", e.message[0], " (", e.code[0], ") --> 
interrupting, sorry!")

 break

--- snip ---

the execution is broken with an "ŚSL_VERIFICATION_FAILED" error.

I have tried both python 2.7 and 3.x, no difference :( I have also 
upgraded 'tweepy', no help.


I suspect this being somehow related to my current system, i.e. openSuSE 
Tumbleweed. I tested the script on a ubuntu system and encountered no 
problems... But I need to get the script running also with my openSuSE :)


Any ideas what could be causing this weird problem?

Thanks in advance!

Kimmo
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Need solution with this problem

2016-01-13 Thread ifeanyioprah--- via Python-list


Create a class called BankAccount
Create a constructor that takes in an integer and assigns this to a `balance` 
property.
Create a method called `deposit` that takes in cash deposit amount and updates 
the balance accordingly.
Create a method called `withdraw` that takes in cash withdrawal amount and 
updates the balance accordingly. if amount is greater than balance return 
`"invalid transaction"`
Create a subclass MinimumBalanceAccount of the BankAccount class
import unittest class AccountBalanceTestCases(unittest.TestCase): def 
setUp(self): self.my_account = BankAccount(90)
def test_balance(self): self.assertEqual(self.my_account.balance, 90, 
msg='Account Balance Invalid')
def test_deposit(self): self.my_account.deposit(90) 
self.assertEqual(self.my_account.balance, 180, msg='Deposit method 
inaccurate')
def test_withdraw(self): self.my_account.withdraw(40) 
self.assertEqual(self.my_account.balance, 50, msg='Withdraw method 
inaccurate')
def test_invalid_operation(self): 
self.assertEqual(self.my_account.withdraw(1000), "invalid transaction", 
msg='Invalid transaction')
def test_sub_class(self): self.assertTrue(issubclass(MinimumBalanceAccount, 
BankAccount), msg='No true subclass of BankAccount')
Thank you.
Pls need assistance. My email : [email protected].
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Re: Need solution with this problem

2016-01-13 Thread Tim Golden

On 13/01/2016 05:57, ifeanyioprah--- via Python-list wrote:

[... snip yet another homework dump with one more still held in
moderation ...]

At this point you're basically spamming this list. I won't allow any
more of your posts through unless they appear to be engaging with the
help shown to you (and others?) over the last few days.

TJG
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Re: Which Python editor has this feature?

2016-01-13 Thread Terry Reedy

On 1/12/2016 5:18 AM, Chris Angelico wrote:

On Tue, Jan 12, 2016 at 7:27 PM, Terry Reedy wrote:

Can psycopg2 be installed with pip? There is an issue (#23551) to make a
pip GUI and make it accessible from IDLE. We need someone with both pip and
tkinter knowledge to either design and write it or mentor a GSOC student to
do so. One written, I would add an IDLE menu item to run it, in a separate
process, just as done now with turtledemo.

Yes, invisible smiley... but with a hint of truth too. Obviously
installing PostgreSQL itself is outside the scope of IDLE, but
psycopg2 is indeed pip-installable... except that it isn't always, on
Windows, because wheels aren't available for all versions. (There's no
Python 3.5 wheel yet; at least, I can't see one on PyPI.)

Maybe someone should give them a prod. It has been 4 months.
http://www.lfd.uci.edu/~gohlke/pythonlibs/
only has psycopg, for 2.6.

> So what I'm

really looking for isn't an IDLE feature but a Python packaging
feature - some people have talked about setting up build farms that
can produce wheels for people.

Building binaries is a rather different issue, certainly on Windows.

Hmm. I just tried this, and actually, there's some possibly
low-hanging fruit. (Tested on Python 3.4.3 as 3.5 can't install
psycopg2 anyway.)

import pip; pip.main(["install","psycopg2"])

https://bugs.python.org/issue23551
has my report of experimenting with directly using pip.main. The main
issue I ran into is that pip creates a cache of 'currently installed
packages' the first time it needs it and never again during the same
process. In other words, pip.main is called exactly once when pip is
run from the command line. Another command from the command line starts
a new process, which makes a new cache. So calling main() repeatedly
may fail due to a stale cache. However, the need to refresh it is
predictable, so reloading the module may work.

This produces a rather messy display, because pip.main seems to assume
that writing carriage returns to the console will result in the
display nicely overwriting (producing a moving progress bar as the
file gets downloaded). If IDLE can't handle carriage returns as such,
an easy fix would be to simply display them as complete lines; it
would be more verbose than the normal console behaviour, but not as
ugly.

Currently, Idle sends user code output to the tk Text widget as is,
except for colorizing. There was an issue about changing this, but it
was closed, at least for the time being, as Python allows print to send
output to any file and does not require than stdout be connected to a
'console', and anyway there is no standard for console behavior.

A gui program that runs pip and displays its output would generally
parse output for display in differnet widgets.

A couple of other random thoughts from this experiment.

* Going to python.org and pointing the mouse at the download link got
me 3.5.1 32-bit. This is on Google Chrome on a Windows 7 64-bit VM.
* Instead of pip.main(["install","psycopg2"]), I'd like to be able to
say pip.install("psycopg2"). In fact, I might take that to the pip
folks as a suggestion.

* The performance difference between "import pip" on 3.4.3 and 3.5.1
was dramatic! I don't know whether it's CPython that's been sped up or
pip itself, but it's awesome!

Try with 3.4.4, as I believe its installer should also update to the
most recent pip version.

There's some kind of issue between pip and Idle that means that
installing a non-wheel blows up with an exception:

Traceback (most recent call last):
File
"C:\Users\Rosuav\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\basecommand.py",
...
return s.decode(sys.__stdout__.encoding)
AttributeError: 'NoneType' object has no attribute 'encoding'

Assuming that sys.__sydout__ is not None is a bug on pip's part.
Perhaps you could report it to it list or tracker, and point Donald and
whoever to https://docs.python.org/3/library/sys.html#sys.__stdin__

"Note

Under some conditions stdin, stdout and stderr as well as the original
values __stdin__, __stdout__ and __stderr__ can be None. It is usually
the case for Windows GUI apps that aren’t connected to a console and
Python apps started with pythonw."

IDLE is a GUI app that on Windows is started with pythonw.exe. More
relevant, user code is executed in a windowless pythonw process. The
same problem should occur with any IDE that executes user code in a
pythonw process.

A GUI program could work around the bug by setting sys.__stdin__ to an
object with a .encoding attribute. I checked that this can be done.

Maybe calling pip.main just isn't a supported thing, but it'd be nice
if there were _some_ way to do this, even without a fancy GUI.

Calling is once during a process is supported, or supposed to be.
If you ran, at the console,
> pythonw.exe -c "import pip; pip.main(['install','psycopg2'])"
the same failure would happen. However, the

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