Hmm, why not. :D
On 22.09.2015 20:43, Python_Teacher via Python-list wrote:
you have 10 minutes😂 Good luck!!
1. What is PEP8 ?
A PEP.
2. What are the different ways to distribute some python source code ?
unison, rsync, scp, ftp, sftp, samba, http, https, mail, git, ....
2 Lists
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?
Don't optimized until you need to. So, we leave it as is. ;)
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 ?
# :-P
def function(input):
return output
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 ?
The program ends with a traceback. So, my variables are all gone. :(
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.
@str2print
def hello(s):
""" Return "Hello $s" but actually returns None """
return "%s %s" % ("Hello", s)
2. What is the effect of the decorator on a call to the new method 'hello' ?
It prints "Hello {s}" and returns None.
3. What is the return value of hello.__doc__
'wrapper'
Best,
Sven
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