Fix Python – How to apply gradient clipping in TensorFlow?

Considering the example code.
I would like to know How to apply gradient clipping on this network on the RNN where there is a possibility of exploding gradients.
tf.clip_by_value(t, clip_value_min, clip_value_max, name=None)

This is an example that could be used but where do I introduce this ?
In the def of RNN
lstm_cell = rnn_cell.BasicLSTM….

Fix Python – How can I initialize a dictionary of distinct empty lists in Python?

My attempt to programmatically create a dictionary of lists is failing to allow me to individually address dictionary keys. Whenever I create the dictionary of lists and try to append to one key, all of them are updated. Here’s a very simple test case:
data = {}
data = data.fromkeys(range(2),[])
print data

Actual result: {….

Fix Python – DateTimeField doesn’t show in admin system

How come my “date” field doesn’t come up in the admin system?
In my file i have
from django.contrib import admin
from glasses.players.models import *

and the Rating model has a field called “date” which looks like this
date = models.DateTimeField(editable=True, auto_now_add=True)

However within the admin syst….

Fix Python – How to check whether a method exists in Python?

In the function __getattr__(), if a referred variable is not found then it gives an error. How can I check to see if a variable or method exists as part of an object?
import string
import logging

class Dynamo:
def __init__(self,x):
print “In Init def”
def __repr__(self):
print self.x
def __str__(self):
print self.x
def __int_….

Fix Python – unittest Vs pytest

In unittest, I can setUp variables in a class and then the methods of this class can chose whichever variable it wants to use…
class test_class(unittest.TestCase):
def setUp(self):
self.varA = 1
self.varB = 2
self.varC = 3
self.modified_varA = 2

def test_1(self):

Fix Python – Cell-var-from-loop warning from Pylint

For the following code:
for sort_key, order in query_data[‘sort’]:
results.sort(key=lambda k: get_from_dot_path(k, sort_key),
reverse=(order == -1))

Pylint reported an error:

Cell variable sort_key defined in loop (cell-var-from-loop)

Could anyone give a hint what is happening here? From pylint source code the description ….

Fix Python – Multiple Python versions on the same machine?

Is there official documentation on the Python website somewhere, on how to install and run multiple versions of Python on the same machine on Linux?
I can find gazillions of blog posts and answers, but I want to know if there is a “standard” official way of doing this?
Or is this all dependent on OS?

Fix Python – How to determine if a number is any type of int (core or numpy, signed or not)?

I need to test whether a variable is of type int, or any of*, np.uint*, preferably using a single condition (i.e. no or).
After some tests, I guess that:

isinstance(n, int) will only match int and np.int32 (or np.int64 depending on plateform),
np.issubdtype(type(n), int) seems to match all int and*, but doesn’t match np.uint*.