[Tutor] Modularity

[kay Cee]

Recently I've decided to write a pong style game with pygame; however, I can't 
seem to modularize the game successfully.

I'm looking to make individual modules for each class eg. Ball, Paddle,bounds, 
Game, Physics and Logic.
Used like this :
ball = Ball(), paddle = Paddle() and etc...
In a Game class...
Mainly, I get errors that say class is not defined..

My questions are what is the best way to achieve this and what is the best way 
to import yourClass?

So far I've tried:
Import class as class,
>From class import*,
Import class



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[Tutor] Private members?

[kay Cee]

Say I have a basic Circle class, for example:

class Circle:
def __init__(self, radius):
self.__radius = radius 

Does adding the double underscore make this member directly inaccessible to 
children of the Circle class?

Also, I'd like to know if there are any side effects to programming classes 
this way?


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[Tutor] Inheritance vs Assignment

[kay Cee]

Suppose there is ->

Class a():
 def__init__(self, var):
pass

Class b(a):
 def__init__(self):
 super().__init__(self, var)
pass

Note: syntax may be incorrect ...

Is it better to do

b = a()

Instead of making b its own class?
Also, what would be the benefit of making a separate class for b if any at all?

Thanks in advance 

Unee0x
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[Tutor] Importing classes

[kay Cee]

Is there a proper way to import  a class from a module? If so, please tell.

Thank You,
Unee0x

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[Tutor] list of functions

[kay Cee]

Greetings all,

I would like to use a list of functions for an automation project, and this
is the prototype I came up with
###
def func1():
print('func1')

def func2():
print('func2')

def func3():
print('func3')


func_list = ('func1', 'func2', 'func3')

for f in func_list:
eval(f)()
#

The output shows as intended, but I'd like to know if there are any safety
or performance issues using this prototype or if there is a better way to
acheive a list of functions.

Thanks in advance
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[Tutor] help with subprocess module

[kay Cee]

I made a python script that will update a Ubuntu Server every second and
writes asuccess message  and date to a log file, but for some reason the
file is not being written to.

Here is the Script:


#!/usr/bin/python3



import subprocess

import time

import datetime


class UpdateError(Exception):

pass


def update():

while True:

try:

update_log = open('update_log.txt', 'r+')

time.sleep(1)

subprocess.call(['apt-get', 'update', '-y'])

date = datetime.datetime.now()

update_log.write("System was updated sucessfully on {}\n".format
(str(date)))

subprocess.call(['reboot'])


except UpdateError:

print("Update Error!!!")


update_log.close()


if __name__ == '__main__':

update()
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