Concise idiom to initialize dictionaries

[bruno modulix]

Larry Bates a écrit :
> It is almost certain that you should use either a list of dictionaries
> or a dictionary containing other dictionaries for this.  Creation of
> 26 distinct dictionaries is almost never a good solution as it makes
> it nearly impossible to iterate over them and would make code to
> manipulate them unable to be generalized easily.
> 
> Example:
> 
> #
> # To create a list of dictionaries
> #
> list_of_dicts=[]
> for i in range(26):
>     list_of_dicts.append({})
> 

or just
list_of_dicts = [{} for i in range(26)]

or if you want a dict of dicts :
dod = dict([(i, {}) for i in range(26)])