从php到python - 没有大括号的交易

Question

i am a PHP developer by... well that's just what i picked up from a need to develop web services. since than i've found a need to start using python for various projects. one of the first things that has pissed me off is the obsession "properly" indenting code. now i understand its purpose. however, what i have found is that not using { } in my code blocks tends to cause me some periods of wtf.

because of this, i find myself doing stuff like

if a is not None:
  for x in a:
      print x
  # endfor
# endif

this seems to help me keep my code in order and visually i can see whats in scope to the loop and control statement.

so what are some other people doing out there that come from the land of { and ; ? or am i the only maniac with this issue?

Answer 1

1 )

do not do

from __future__ import braces

python will troll you with the following if you do

>>> from __future__ import braces
SyntaxError: not a chance

basically python is telling you no because python is not coded for php and javascript like syntax

its coded to tell you no

to python coders/devs its considered an inside joke but its cruel to tell someone to do that when they are asking for help

2) (if your using python 2.7.5 or older than your fine)

for python 3.x your code is broken as it will return a syntax error

>>> a = "hsfjsdhfjdhfdhfdhf"
>>> if a is not None:
        for x in a:
                print x

SyntaxError: invalid syntax

you forgot ()

it should look like this

>>> a = "hsfjsdhfjdhfdhfdhf"
>>> if a is not None:
        for x in a:
                print(x)

h
s
f
j
s
d
h
f
j
d
h
f
d
h
f
d
h
f

also {} is a dict in python and since python has strict syntax rules you wont be able to wrap code in it only strings in the following formats

{"lol":"omg"}
{"lol":"omg","wow":"omg"}
{"lol":{"wow":"omg","pfft":"lolwut"}}
{"lol":["lol","omg","pfft","lolwut"]}
{"lol":[["lol","omg"],["pfft","lolwut"]]}

and numerous other ways

also you can infinetly place a dict inside a dict as long as a key exists the value can be a dict, list, tuple, or string

example:

{"lol":{"wow":{"omg":{"pfft":"lolwut"}}}}

only thing is

it gets harder to split that if you dont know what to do

3)

the one thing i recommend you do is get a nice big book on python and start reading

that's the best way to learn python

especially if you want your projects to be good

or if you want to learn online

start with this

http://learnpythonthehardway.org/

and then move onto this

Datastructures and Algorithms (below is the link)

http://interactivepython.org/courselib/static/pythonds/index.html

or you can do both it doesnt really matter which order you do it in so long as you learn something