[Pyobjc-dev] error:depythonifying 'charptr', got 'str'

[Liu A. <ld...@ou...>]

Dear teams:
    I am confused by this error:ValueError: depythonifying 'charptr', got ‘str’ for few days and cannot find the reason.
My pyobjc version is 7.3, macOS version is 10.15.7 and the objective-c function is below

// Function to read Test Device Register
  -(BOOL) readRegisterAtAddress:(NSUInteger)address
   withLength:(NSUInteger)length
   data:(uint8_t *)data
   error:(NSError **)error;

I used it in this way
data = '\x00'*4
device.device.readRegisterAtAddress_withLength_data_error_(0x1c, 4, data, None)
Can you help me to solve this issue.
Thank you very much.

Aubrey.Liu

发自我的iPhone