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Calling a function of a module by using its name (a string)
...
Assuming module foo with method bar:
import foo
method_to_call = getattr(foo, 'bar')
result = method_to_call()
You could shorten lines 2 and 3 to:
result = getattr(foo, 'bar')()
if that makes more sense for your use case.
You can use getattr in this fashion on class insta...
What's the bad magic number error?
...
Perhaps you need 'rm __pycache__/*pyc' now, because the pyc files are now in that folder.
– Arpad Horvath
Jun 2 '16 at 17:30
1...
也来说说ReactOS的调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...调试的.所以我就找了先下fDebug的的代码.在D:\ReactOS\ReactOS_src\boot\freeldr\fdebug这个目录下.
这里我啰嗦下.源代码的路径别放到目录中有空格的文件夹中,有时会导致不能编译.例如,以前我把源码放在了D:\Program Files\ReactOS_src\boot\freeldr\...
Disable migrations when running unit tests in Django 1.7
...1.6. I defined a new settings module just for unit
tests called "settings_test.py", which imports * from the main
settings module and adds this line:
MIGRATION_MODULES = {"myapp": "myapp.migrations_not_used_in_tests"}
Then I run tests like this:
DJANGO_SETTINGS_MODULE="myapp.setti...
How do I parse an ISO 8601-formatted date?
... and are okay to tolerate occasional misreads.
– ivan_pozdeev
Apr 23 '15 at 23:34
2
Agreed. An ex...
iOS: How to store username/password within an app?
...ta and kSecAttrAccount in Objective-C code, so be sure to cast them using (__bridge id), e.g., [keychainItem setObject:obj forKey:(__bridge id)kSecValueData];
– Joe Hankin
Apr 6 '13 at 23:13
...
Python: most idiomatic way to convert None to empty string?
...ot ''. s(0) should return '0', not ''. Likewise for an object that defines __bool__ or __nonzero__.
– Oddthinking
May 13 '17 at 3:27
...
What are type lambdas in Scala and what are their benefits?
...ction of Either[A, B]. The monad typeclass looks like this:
trait Monad[M[_]] {
def point[A](a: A): M[A]
def bind[A, B](m: M[A])(f: A => M[B]): M[B]
}
Now, Either is a type constructor of two arguments, but to implement Monad, you need to give it a type constructor of one argument. The sol...
Can you give a Django app a verbose name for use throughout the admin?
... the 1.8 docs (and current docs),
New applications should avoid default_app_config. Instead they should require the dotted path to the appropriate AppConfig subclass to be configured explicitly in INSTALLED_APPS.
Example:
INSTALLED_APPS = [
# ...snip...
'yourapp.apps.YourAppConfig',
]...
Zip lists in Python
...x. list, string, tuple, dictionary)
Output (list)
1st tuple = (element_1 of numbers, element_1 of letters)
2nd tuple = (e_2 numbers, e_2 letters)
…
n-th tuple = (e_n numbers, e_n letters)
List of n tuples: n is the length of the shortest argument (input)
len(numbers) =...