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Python 2021-09-20 16:03:05
python unbound variable
>>> foo = None >>> def bar(): ... global foo ... if False: ... foo = 'spam' ... print foo ... >>> bar() None # Python needs to know in the beginning of the function if you plan on using the local or the # g... Add solution -
Other 2021-09-17 09:41:01
what is metaclass in python
A metaclass is the class of a class. A class defines how an instance of the class (i.e. an object) behaves while a metaclass defines how a class behaves. A class is an instance of a metaclass. While in Python you can use arbitrary callables for metaclass... Add solution -
Other 2021-09-15 11:42:02
comment multiple lines in python shortcut
#There is no way to comment multiple lines in Python. #You just keep using "#" symbol to comment each line out. ''' Technically you could also use triple single quotation marks like so, but this formatting does not count as "true" sou... Add solution -
Python 2021-09-06 00:52:02
python data types
# Here are the available types in Python. Use type() to find out what # type your object is. Text Type: str Numeric Types: int, float, complex Sequence Types: list, tuple, range Mapping Type: dict Set Types: set, frozenset Boolean Type: bool Binary Typ... Add solution -
Python 2021-08-31 21:37:01
ImportError: cannot import name include
# While you should definitely avoid circular dependencies, # you can defer imports in python. # for example: import SomeModule def someFunction(arg): from some.dependency import DependentClass #this ( at least in some instances ) will circumven... Add solution -
Html 2021-08-29 08:29:01
access particular array index in html template django
Remember that the dot notation in a Django template is used for four different notations in Python. In a template, foo.bar can mean any of: foo[bar] # dictionary lookup foo.bar # attribute lookup foo.bar() # method call foo[bar] #... Add solution