CSP-P011: Use memoryview for Bytes Slicing in Loop¶

Category: Performance

Severity: LOW

Description¶

Slicing bytes repeatedly creates copies. Use memoryview for zero-copy slicing.

Vulnerable Code Example¶

for i in range(0, len(data), 4):
    chunk = data[i:i+4]
    handle(chunk)

Safer Code Example¶

view = memoryview(data)
for i in range(0, len(view), 4):
    chunk = view[i:i+4]
    handle(chunk)

How to Suppress a Finding¶

# ignore
# or
# noqa: CSP-P011