Python: memoryview() function
memoryview() function
The memoryview() function is used to get a memory view object from a specified object.
Version:
(Python 3.2.5)
Syntax:
memoryview(obj)
Parameter:
Name | Description | Required / Optional |
---|---|---|
obj | A memoryview that references obj. obj must support the buffer protocol. Built-in objects that support the buffer protocol include bytes and bytearray. | Required |
Return value:
A memory view object of the given object.
Example: Python memoryview() function
#random bytearray
randomByteArray = bytearray('xyz', 'utf-8')
a = memoryview(randomByteArray)
# access memory view's zeroth index
print(a[0])
# create byte from memory view
print(bytes(a[0:4]))
# create list from memory view
print(list(a[0:6]))
Output:
120 b'xyz' [120, 121, 122]
Python Code Editor:
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Python: Tips of the Day
Returns the symmetric difference between two lists, after applying the provided function to each list element of both:
Example:
def tips_symmetric_difference_by(p, q, fn): _p, _q = set(map(fn, p)), set(map(fn, q)) return [item for item in p if fn(item) not in _q] + [item for item in q if fn(item) not in _p] from math import floor print(tips_symmetric_difference_by([4.2, 2.4], [4.6, 6.8],floor))
Output:
[2.4, 6.8]
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