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Hello fellow python programmers let hang-out,This thread is created to rub mind with python programmer,make friends with new python programmer,connect and discuss about python language in general

drop your challenge and let tackle it together.

#Togetherwegrow

gbolly1151:
Hello fellow python programmers let hang-out,This thread is created to rub mind with python programmer,make friends with new python programmer,connect and discuss about python language in general

drop your challenge and let tackle it together.

#Togetherwegrow

You should drop your email address and twitter handle if you have one. From there we can network, share materials and other stuff related to python programming.

General0847:
You should drop your email address and twitter handle if you have one. From there we can network, share materials and other stuff related to python programming.

You can connect with me on Twitter @ajayigbolahan1

gbolly1151:
You can connect with me on Twitter @ajayigbolahan1

I will do that. Thanks

Am a newbie and i want to learn python any help u guys can render will be appreciated

Don't we have hacking programmers?

Baabu320:
Am a newbie and i want to learn python any help u guys can render will be appreciated

To learn python or any other programming languages, you can source for online resources but i recommended starting with tutorialpoint.com

honiboi:
Don't we have hacking programmers?

Why not in as much it is white hacking

gbolly1151:
Hello fellow python programmers let hang-out,This thread is created to rub mind with python programmer,make friends with new python programmer,connect and discuss about python language in general

drop your challenge and let tackle it together.

#Togetherwegrow

Nice, I know a bit of Python. I have done some rough homework with it on and off. What domain are you currently pursuing with Python?

johnbendie:
Nice, I know a bit of Python. I have done some rough homework with it on and off. What domain are you currently pursuing with Python?

Web development with django

gbolly1151:
Web development with django

What's the frequency of getting web development job with python/django? Most I see on here are php/laravel.

iCode2:
What's the frequency of getting web development job with python/django? Most I see on here are php/laravel.

Well,your client dont care what language you use to development a website in as much it does the job require of it,simple to use,scalable and fast

Hello family,am new into programming and am currently running a class on python and data science.I will appreciate my ogas in the house,to share materials that would aid my learning. my email is danielachowue@gmail.com

gbolly1151:
Well,your client dont care what language you use to development a website in as much it does the job require of it,simple to use,scalable and fast

They might care when they meet a laravel guy who's willing to do the work for a lesser price considering the fact that hosting is cheaper with laravel framework. Don't you think so?

Python problem:

What ideas do you have for summing a nested list? e.g. sum([2, 9, [2, 1, 13, 2], 8, [2 , 6]]) = 45
Here's my approach with a list comprehension converting it to string and then to integers

sum([int(t.strip('[ [] ]')) for t in str(t).split(',')])

code won't work if you've got an empty list as a member, but of course this can be slightly adjusted to account for this

Problem:
Flatten a nested list.
for a list like

[2,[9,1,1],[2,1,[13,5,4,1],2],8,[2,6]]

, obtain

[2, 9, 1, 1, 2, 1, 13, 5, 4, 1, 2, 8, 2, 6]

Going OOP approach:

class NestedList:
    """Represents class of nested list and hosts methods
    which work on this type of lists"""

    def __init__(self, val=None):
        if val is None:
            self.val = []
        else:
            self.val = val

    def flatten(self):
        """flattens a nested list into a list object"""

        output = []
        for element in self.val:
            if isinstance(element, list):
                e = NestedList(element)
                output += e.flatten()
            else:
                output += [element]
        return output

    def __str__(self):
        """print nested list"""

        return str(self.val)

output:

>>> j = NestedList([2,[9,1,1],[2,1,[13,5,4,1],2],8,[2,6]])
>>> print(j)
[2, [9, 1, 1], [2, 1, [13, 5, 4, 1], 2], 8, [2, 6]]
>>> j.flatten()
[2, 9, 1, 1, 2, 1, 13, 5, 4, 1, 2, 8, 2, 6]

Actually quite cute to employ recursion in solving the problem.

Problem:
count the number of occurrence of a target in a nested list

For a list like:

[2,[9,1,1],[2,1,[13,5,4,1],2],8,[2,6]]

number of occurrence of number 2 = 4


Still OOP:

class NestedList:
         .
         .
         .
         .
    def count(self, other):
        """counts the number of occurrence of target in
        a nested list"""

        icount = 0
        for element in self.val:
            if isinstance(element, list):
                e = NestedList(element)
                icount += e.count(other)
            else:
                if element == other:
                    icount += 1
        return icount

Output:

>>> j = NestedList([2,[9,1,1],[2,1,[13,5,4,1],2],8,[2,6]])
>>> j.count(2)
4

obtain transpose of a 4x3 matrix:
matrix is a tuple of tuple represented as

((0, 1, 2), (3, 4, 5), (6, 7, 8 ), (9, 10, 11))

This should yield a 3x4 matrix represented again as a tuple of tuple:

((0, 3, 6, 9), (1, 4, 7, 10), (2, 5, 8, 11))

At the command line:

(venv) C:\Users\...\...\Tests>python
Python 3.7.3
Type "help", "copyright", "credits" or "license" for more information.

>>> data = ((0, 1, 2), (3, 4, 5), (6, 7, 8 ), (9, 10, 11))
>>> data_transpose = tuple(zip(*data))
>>> data_transpose
((0, 3, 6, 9), (1, 4, 7, 10), (2, 5, 8, 11))

Problem:
if you created a 100 x 100 matrix where each element is an average of 20 random numbers from 0 to 100, will there exist a pattern?
Most probably! Even random number generators are biased.

Put this to the test in python and we get a clear histogram biased towards the center as more and more datapoints are added.
Quite an interesting visualization.

# create mean function
def mean(num_list):
    return sum(num_list) / len(num_list)

# create average list of 1 x list_length, with sample_fraction determining what fraction to obtain from list_length
def obtain_average(list_length, sample_fraction):
    average_list = []
    for i in range(list_length):
        average_list.append(mean(random.sample(range(list_length), int(list_length/sample_fraction))))
    return average_list

#create 100 x 100 matrix of averages (1/5) of list_length
with open('store_text.txt','w') as f:
    for i in range(100):
        f.writelines([str(x) + "\t" for x in obtain_average(100,5)])
        f.write('\n')

#transpose data
with open('store_text.txt','r') as f:
    data = f.readlines()

data = [tuple(item.split("\t" )) for item in data]
data_transpose = list(zip(*data))

with open('store_text.txt','w') as f:
    for i in range(100):
        f.writelines([str(x) + "\t" for x in data_transpose[i]])
        f.write('\n')

#plot data

data shows that by the time we are getting to the 30th list, a clear pattern starts to form biased to the center

Please,, it is needed for my final year project. I have already trained the SVM model. Please how will I send information from flask using sublime IDE to my database. I used mysql_connector to connect flask with database.

Glad to be here

dansolution:
Hello family,am new into programming and am currently running a class on python and data science.I will appreciate my ogas in the house,to share materials that would aid my learning. my email is danielachowue@gmail.com

Please where are you running the program cos I'm interested in it too

To learn python programming for starters. What's the best laptop to buy
Specs and brand
Thanks

benob:
To learn python programming for starters. What's the best laptop to buy
Specs and brand
Thanks

Core i5
8gb ram

It been a while here,let hook ourselves with a question here

On heroku, I understand that dyno is a virtual file system on which django app are served and can go off anytime, when this happen, do i need to set the config var again to start my app when dyno is on again?