Asked by: Jianfang Palomerotechnology and computing databases
Does Python have null?
Last Updated: 15th May, 2020
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Beside this, what's null in Python?
PythonNoneNULL in Python. The None keywordis used to define a null variable or an object. InPython, None keyword is an object, and it is a datatype of the class NoneType .
Furthermore, is string empty Python? Empty strings are "falsy" which means they areconsidered false in a Boolean context, so you can just use notstring. For example: string = "" if notstring: print "Empty String!"
Thereof, what is the difference between null and empty?
NULL is an absence of a value. An emptystring is a value, but is just empty. NULL isn'tallocated any memory, the string with NULL value is just apointer which is pointing to nowhere in memory. however,Empty IS allocated to a memory location, although the valuestored in the memory is "" .
Is Python an operator?
The == operator compares the values of both theoperands and checks for value equality. Whereas is operatorchecks whether both the operands refer to the same object or not.Hence list1 and list2 refer to different objects. We can check itwith id() function in python which returns the“identity” of an object.