Re: A little test for you Guys😜
Mark Lawrence
breamoreboy at yahoo.co.uk
Tue Sep 22 19:32:18 EDT 2015
On 22/09/2015 19:43, Python_Teacher via Python-list wrote:
> you have 10 minutes😂 Good luck!!
>
>
> 1. What is PEP8 ?
It's the one between PEP7 and PEP9.
>
> 2. What are the different ways to distribute some python source code ?
Write on sheet of paper, fold into paper dart, throw from window.
>
> 2 Lists
Tut, tut, tut.
>
> Let's define the function plural :
>
> def plural(words):
> plurals = []
> for word in words:
> plurals.append(word + 's')
> return plurals
>
> for word in plural(['cabagge','owl','toy']):
> print word
>
> Question : How could the code of the function plural be optimised?
It is all ready optimised for programmer time so don't bother with it
unless there are unforeseen bugs.
>
> 3 Dictionaries
>
> Here are two dictionnaries :
>
> input = {
> 'foo1': 'bar1',
> 'chose': 'truc',
> 'foo2': 'bar2',
> }
> output = {
> 'bar1': 'foo1',
> 'truc': 'chose',
> 'bar2': 'foo2'
> }
>
> Question : Propose a function that returns output when you provide input ?
def function():
return input("Who cares?")
>
> 4 Iterators
>
> Let's consider this program :
>
> def program_1():
> yield 1
> yield 2
> yield 3
>
> g = program_1()
> a = list(g)
> b = list(g)
> c = g()
>
> Question : At the end of the program,
>
> 1. What is the type of g ?
> 2. What is the value of a ?
> 3. What is the value of b ?
> 4. What is the value of c ?
How the hell would I know?
>
> 5 Decorators
>
> Let's consider now :
>
> def str2print(f):
> def str2print_wrap(*args, **kwargs):
> """wrapper"""
> s = f(*args, **kwargs)
> print s
> return str2print_wrap
>
> def hello(s):
> """ Return "Hello $s" """
> return "%s %s" % ("Hello", s)
>
> Questions :
>
> 1. Decorate the method 'hello' with 'str2printf' and write the corresponding code.
> 2. What is the effect of the decorator on a call to the new method 'hello' ?
> 3. What is the return value of hello.__doc__
>
Can't afford decorators, they cost an arm and a leg in the UK.
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
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