How Can I Determine if My Python Shell is 32-bit or 64-bit?

Determining Python Shell Bit Architecture

Want to know if the Python shell is currently running in 32-bit or 64-bit mode? Use this to get the answer easily:

Check sys.maxsize

import sys
print(sys.maxsize)

• If sys.maxsize is greater than 2³², then Indicates 64-bit mode.
• If sys.maxsize is less than or equal to 2³², it indicates 32-bit mode.

Check structure pointer size

import struct
pointer_size = 8 * struct.calcsize("P")
print(pointer_size)

• If pointer_size is 32, it means 32-bit mode.
• If pointer_size is 64, it means 64-bit mode.

Note:

• sys.maxsize only works in Python 2.6 and above.
• platform.architecture() is not recommended for this purpose as it can produce unreliable results in some cases (e.g. OS X universal binaries).

Through these methods, you can easily determine whether the current Python shell is running in 32-bit or 64-bit mode, making it easy to develop and debug programs.

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