A library aimed for providing handy hacks for your daily coding task.
Some syntactic sugar taken from various languages' designs added to Python3 for some coding ease. They are anti-Pythonic and even "Java (or C#) flavored", but they are intuitive (at least to me) and gets the job done.
>>> from pytrickz import *
>>> from pytrickz.extensions import *
>>>
>>> # Chaining iterable operations
>>> stream.of(1, 2, 3).map(lambda x: x ** 2).to(list)
[1, 4, 9]
>>>
>>> # Regexp-enabled string operations
>>> 'Albert Einstein'.rematch(r'(\w+) (\w+)').group(2)
'Einstein'
>>>
>>> # Looped XOR. Everyone's favorite bit operation.
>>> b'abcdef' ^ 0x50
b'123456'
>>> Install directly from GitHub:
$ pip3 install -U git+https://github.com/EZForever/pytrickz
If you need things in the pybrickz.extensions package, forbiddenfruit need to be installed. Note that forbiddenfruit only supports CPython.
Start using right away with from pytrickz import *. All features are documented via docstrings so use help() if you need guidance.
For full feature list, try help(pytrickz). That might help.
Idea stolen borrowed from Stream<T> class in Java 8+, allows chaining operations on an iterable and have them lazy-evalulated.
>>> from pytrickz import stream
>>>
>>> # Currently `stream` support ~30 common operations. `help(stream)` for more.
>>>
>>> # Crunching numbers
>>> # Newlines are completely optional, added only for readability
>>> stream.of(1, 1, 4, 5, 1, 4) \
... .unique() \
... .map(lambda x: x ** 2) \
... .filter(lambda x: x % 2) \
... .sum()
...
26
>>>
>>> # Hexadecimal countdown because why not
>>> stream.range(15, 0) \
... .map('0123456789abcdef'.__getitem__) \
... .to(list)
...
['f', 'e', 'd', 'c', 'b', 'a', '9', '8', '7', '6', '5', '4', '3', '2', '1']
>>>
>>> # Transposing a 4x4 "matrix"
>>> my_mat = '048c159d26ae37bf'
>>> stream(my_mat) \
... .group(4) \
... .zip() \
... .flatten() \
... .join()
...
'0123456789abcdef'
>>>
>>> # Even basic I/O with CSV files
>>> stream.fromcsv('example.csv', *(float, None, None, float, float)) \
... .starmap(lambda mean, mn, mx: (mean, mx - mn)) \
... .enumerate() \
... .starmap(lambda idx, data: (idx + 1, *data)) \
... .tocsv('out.csv', *('gen', 'frames_mean', 'frames_range'))
...
>>> A concept from C#. Prepend your method definition with @extension and your method appears in every instance of the target class.
>>> from pytrickz import extension
>>>
>>> # This example needs `forbiddenfruit` to work, since it extends built-in types. `help(extension)` for more info.
>>>
>>> @extension
... def my_reversed(self: str) -> str: # Type annotation on `self` is necessary, similar to writing `this String` in C#
... return self[ : : -1]
...
>>> '123456'.my_reversed()
'654321'
>>>
>>> # Properties work too
>>> @extension
... @property
... def length(self: str) -> int:
... return len(self)
...
>>> '123456'.length
6Using @extension we can extend built-in types to provide even more handy stuff.
>>> from pytrickz.extension import *
>>>
>>> # The above statement enables all extensions. `help(pytrickz.extension)` for all available modules.
>>>
>>> # Regexp-enabled string operations
>>> 'Albert Einstein'.rematch(r'(\w+) (\w+)').group(2)
'Einstein'
>>> '1.jpg 2.png'.refindall(r'\.\w{2}g') # Use .refind() if only need the first match
[<re.Match object; span=(1, 5), match='.jpg'>, <re.Match object; span=(7, 11), match='.png'>]
>>> '1.jpg 2.png'.rereplace(r'\.\w{2}g', '.gif')
'1.gif 2.gif'
>>>
>>> # Hex & Base64 encoding
>>> '313233343536'.unhex() # Also .b64decode()
b'123456'
>>> b'123456'.b64encode() # Also .hex()
'MTIzNDU2'
>>>
>>> # Checksum calculation
>>> b'123456'.cksum() # CRC-32; name from GNU coreutils
'0972d361'
>>> b'123456'.md5sum() # Also .sha1sum() and .sha256sum()
'e10adc3949ba59abbe56e057f20f883e'
>>>
>>> # Looped XOR on bytes
>>> b'ABCDEFGH' ^ b'123456'
b'ppppppvz'
>>> b'abcdef' ^ 0x50
b'123456'
>>>
>>> # Comparsion & arithmetic operators for ctypes integers
>>> # NOTE: Not stable and not feature complete
>>> from ctypes import *
>>> a, b = c_int(1), c_int(2)
>>> a < b
True
>>> a + 1 == b
True
>>>