大约有 20,000 项符合查询结果（耗时：0.0544秒） [XML]
Django set field value after a form is initialized
...value after the form was submitted, you can use something like:
if form.is_valid():
form.cleaned_data['Email'] = GetEmailString()
Check the referenced docs above for more on using cleaned_data
share
|
...
Should I use 'has_key()' or 'in' on Python dicts?
...
in is definitely more pythonic.
In fact has_key() was removed in Python 3.x.
share
|
improve this answer
|
follow
|
...
How to check if variable is string with python 2 and 3 compatibility
...x-compatible code, you'll probably want to use six:
from six import string_types
isinstance(s, string_types)
share
|
improve this answer
|
follow
|
...
How to list imported modules?
...ems():
if isinstance(val, types.ModuleType):
yield val.__name__
This won't return local imports, or non-module imports like from x import y. Note that this returns val.__name__ so you get the original module name if you used import module as alias; yield name instead if you wa...
Convert string to Python class object?
...; class Foo(object):
... pass
...
>>> eval("Foo")
<class '__main__.Foo'>
share
|
improve this answer
|
follow
|
...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
While using new_list = my_list , any modifications to new_list changes my_list everytime. Why is this, and how can I clone or copy the list to prevent it?
...
How do I get bash completion to work with aliases?
...
As stated in the comments above,
complete -o default -o nospace -F _git_checkout gco
will no longer work. However, there's a __git_complete function in git-completion.bash which can be used to set up completion for aliases like so:
__git_complete gco _git_checkout
...
Postgres and Indexes on Foreign Keys and Primary Keys
...n ('pg_catalog', 'pg_toast')
and pg_catalog.pg_table_is_visible(c.oid)
order by
n.nspname
,t.relname
,c.relname
If you want to delve further (such as columns and ordering), you need to look at pg_catalog.pg_index. Using psql -E [dbname] comes in handy for figuring out how to query...
How do you disable the unused variable warnings coming out of gcc in 3rd party code I do not wish to
...ut the stuff you have no control over.
For example, instead of -IC:\\boost_1_52_0, say -isystem C:\\boost_1_52_0.
Hope it helps. Good Luck!
share
|
improve this answer
|
fo...
Clean code to printf size_t in C++ (or: Nearest equivalent of C99's %z in C++)
I have some C++ code that prints a size_t :
9 Answers
9
...