177c177
< 	ReturnVal = PyByteArray_FromStringAndSize((char *)output,
---
> 	ReturnVal = PyBytes_FromStringAndSize((char *)output,
214,215c214,215
<     if (!(result_str = PyByteArray_FromStringAndSize(NULL, r_strlen)))
< 	return NULL;
---
>     if (!(result_str = PyBytes_FromStringAndSize(NULL, r_strlen)))
>       return NULL;
219c219
<     zst.next_out = (Byte *)PyByteArray_AS_STRING(result_str);
---
>     zst.next_out = (Byte *)PyBytes_AS_STRING(result_str);
259c259
< 	    if (PyByteArray_Resize(result_str, r_strlen << 1) < 0) {
---
> 	    if (_PyBytes_Resize(&result_str, r_strlen << 1) < 0) {
264c264
<                 (unsigned char *)PyByteArray_AS_STRING(result_str) + r_strlen;
---
>                 (unsigned char *)PyBytes_AS_STRING(result_str) + r_strlen;
281c281
<     if (PyByteArray_Resize(result_str, zst.total_out) < 0)
---
>     if (_PyBytes_Resize(&result_str, zst.total_out) < 0)