cloudcoder.py - Python module to go along with https://scratch.mit.edu/projects/103348115/

cloudcoder.py

"""cloudcoder.py - Utilities for encoding and decoding strings for Scratch cloud data
Use the encode and decode functions to prepare strings to be stored in cloud variables
and to get strings out of them.

Examples:
>>> encode("I <3 the cloud")
'0x2F49203c332074686520636c6f7564'
>>> decode('0x2F49203c332074686520636c6f7564')
'I <3 the cloud'

cloudcoder.py is released under the MIT license."""

def group(it, n):
    """Splits an iterable (it) into n length sections
    >>> list(group("123456789", 3))
    ['123', '456', '789']
    >>> list(group("123456789ab", 3))
    ['123', '456', '789', 'ab']
    """
    while it:
        yield it[:n]
        it = it[n:]

def encode(string):
    """Encodes string using my cloud data encoding system.
    The return value of this function can be directly stored in a cloud variable.
    >>> encode("Hello, World!")
    '0x2F48656c6c6f2c20576f726c6421'
    >>> encode("Hello to the ☁ ☁ ☁")
    '0x4F00480065006c006c006f00200074006f0020007400680065002026010020260100202601'
    """
    chars = [hex(ord(c))[2:] for c in string]
    longest = max(map(len, chars))
    chars = "".join(c.rjust(longest, "0") for c in chars)
    return "0x%sF%s" % (longest, chars)

def decode(string):
    """Decodes string using my cloud data encoding system.
    >>> decode('0x2F48656c6c6f2c20576f726c6421')
    'Hello, World!'
    >>> decode('0x4F00480065006c006c006f00200074006f0020007400680065002026010020260100202601')
    'Hello to the ☁ ☁ ☁'
    """
    longest, enc = string[2:].split("F")
    chars = group(enc, int(longest))
    return "".join(chr(int(c, base=16)) for c in chars)
    

Thanks for this. It makes my heart glad.

But how can you change cloud variables of a project using python?