35 lines
509 B
Python
35 lines
509 B
Python
|
# test memoryview
|
||
|
|
|
||
|
|
# test reading from bytes
|
||
|
|
b = b'1234'
|
||
|
|
m = memoryview(b)
|
||
|
|
print(len(m))
|
||
|
|
print(m[0], m[1], m[-1])
|
||
|
|
print(list(m))
|
||
|
|
|
||
|
|
# test writing to bytes
|
||
|
|
try:
|
||
|
|
m[0] = 1
|
||
|
|
except TypeError:
|
||
|
|
print("TypeError")
|
||
|
|
|
||
|
|
# test writing to bytearray
|
||
|
|
b = bytearray(b)
|
||
|
|
m = memoryview(b)
|
||
|
|
m[0] = 1
|
||
|
|
print(b)
|
||
|
|
print(list(m))
|
||
|
|
|
||
|
|
# test slice
|
||
|
|
m = memoryview(b'1234')
|
||
|
|
print(list(m[1:]))
|
||
|
|
print(list(m[1:-1]))
|
||
|
|
|
||
|
|
import array
|
||
|
|
a = array.array('i', [1, 2, 3, 4])
|
||
|
|
m = memoryview(a)
|
||
|
|
print(list(m))
|
||
|
|
print(list(m[1:-1]))
|
||
|
|
m[2] = 6
|
||
|
|
print(a)
|