How come this is different?

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Hi all:

       I am trying to write my own memory scanner, but I have encountered a
few problem. Apparently, directly specifying "
PROCESS_QUERY_INFORMATION|PROCESS_VM_READ" is not ok, since the interpreter
returns "NameError: name 'PROCESS_QUERY_INFORMATION' is not defined"

so I should do what I did here, to define it for myself first? is this
correct?

Thanks

Code:

import ctypes

kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)

PROCESS_QUERY_INFORMATION = 0x0400
PROCESS_VM_READ = 0x0010

ph = kernel32.OpenProcess(PROCESS_QUERY_INFORMATION|PROCESS_VM_READ,False,
20224)

print(ph)

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<div dir=3D"ltr">Hi all:<div><br></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0I am=
 trying to write my own memory scanner, but I have encountered a few proble=
m. Apparently, directly specifying &quot;<font color=3D"#9900ff">PROCESS_QU=
ERY_INFORMATION|PROCESS_VM_READ&quot;</font> is not ok, since the interpret=
er returns <font color=3D"#ff0000">&quot;NameError: name &#39;PROCESS_QUERY=
_INFORMATION&#39; is not defined&quot;</font><br><div><br></div><div>so I s=
hould do what I did here, to define it for myself first? is this correct?</=
div><div><br></div><div>Thanks</div><div><br></div><div>Code:</div><div><br=
></div><div><div>import ctypes</div><div><br></div><div>kernel32 =3D ctypes=
.WinDLL(&#39;kernel32&#39;, use_last_error=3DTrue)</div><div><br></div><div=
>PROCESS_QUERY_INFORMATION =3D 0x0400</div><div>PROCESS_VM_READ =3D 0x0010<=
/div><div><br></div><div>ph =3D kernel32.OpenProcess(PROCESS_QUERY_INFORMAT=
ION|PROCESS_VM_READ,False, 20224)</div><div><br></div><div>print(ph)</div><=
/div><div><br></div></div></div>

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