File: uctypes_bytearray.py

package info (click to toggle)
giac 1.6.0.41%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 64,540 kB
  • sloc: cpp: 351,842; ansic: 105,138; python: 30,545; javascript: 8,675; yacc: 2,690; lex: 2,449; makefile: 1,243; sh: 579; perl: 314; lisp: 216; asm: 62; java: 41; sed: 16; csh: 7; pascal: 6
file content (22 lines) | stat: -rw-r--r-- 471 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
try:
    import uctypes
except ImportError:
    print("SKIP")
    raise SystemExit

desc = {
    "arr": (uctypes.ARRAY | 0, uctypes.UINT8 | 2),
    "arr2": (uctypes.ARRAY | 2, uctypes.INT8 | 2),
}

data = bytearray(b"01234567")

S = uctypes.struct(uctypes.addressof(data), desc, uctypes.LITTLE_ENDIAN)

# Arrays of UINT8 are accessed as bytearrays
print(S.arr)
# But not INT8, because value range is different
print(type(S.arr2))

# convert to buffer
print(bytearray(S))