Modules extra

usys

See: https://docs.micropython.org/en/latest/library/sys.html

Some functions are listed below. Use print(help(usys)) to get the full list.

usys.version_info()

Python language version, as a tuple of ints.

usys.version()

Python language version, as a string.

usys.platform()

The platform that MicroPython is running on.

usys.implementation()

Object with information about the current MicroPython implementation with following attributes:

name - string “micropython”

version - tuple (major, minor, micro), e.g. (1, 15, 0)

usys.maxsize()

The maximum integer type value that can be saved on the current platform. It returns the number of bytes of heap RAM that are allocated.

The code below uses the REPL to print the output.

from microbit import *
import usys

# print(help(usys))
print('version_info', usys.version_info)
print('version', usys.version)
print('platform', usys.platform)
print('implementation', usys.implementation)
print('maxsize', usys.maxsize)
if usys.maxsize > 2147483648:
    print('64-bit')
else:
    print('32-bit')

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ustruct

See: https://mpython.readthedocs.io/en/master/library/pythonStd/ustruct.html

See: `<https://www.educative.io/answers/what-is-the-python-struct-module

See: https://docs.micropython.org/en/latest/library/struct.html

The struct module in Python is used to convert native Python data types such as strings and numbers into a string of bytes and vice versa.

Supported size/byte order prefixes: @, <, >, !.

Supported format codes: b, B, h, H, i, I, l, L, q, Q, s, P, f, d (the latter 2 depending on the floating-point support).

Functions:

• calcsize

• pack

• pack_into

• unpack

• unpack_from

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uerrno

The uerrno module returns errors.

See: https://mpython.readthedocs.io/en/master/library/pythonStd/uerrno.html

uerrno.errorcode()

Returns the error codes dictionary object.

from microbit import *
import uerrno

print(help(uerrno))
error_codes = uerrno.errorcode
print(error_codes)
print(uerrno.errorcode[uerrno.EINVAL])
print(uerrno.errorcode[22])

errorcodes: {1: ‘EPERM’, 2: ‘ENOENT’, 5: ‘EIO’, 9: ‘EBADF’, 11: ‘EAGAIN’, 12: ‘ENOMEM’, 13: ‘EACCES’, 17: ‘EEXIST’, 19: ‘ENODEV’, 21: ‘EISDIR’, 22: ‘EINVAL’, 95: ‘EOPNOTSUPP’, 98: ‘EADDRINUSE’, 103: ‘ECONNABORTED’, 104: ‘ECONNRESET’, 105: ‘ENOBUFS’, 107: ‘ENOTCONN’, 110: ‘ETIMEDOUT’, 111: ‘ECONNREFUSED’, 113: ‘EHOSTUNREACH’, 114: ‘EALREADY’, 115: ‘EINPROGRESS’}