Micropython is fully compatible with Python 3 syntax... except when it isn't.
In this article, we explore one of the "dark corners" of micropython: limitations imposed by @micropython.native decorator.
Documentation on The Native code emitter is brief and a bit vague:
| # This script checks which combinations | |
| # of except/raise/with and @micropython.native | |
| # are actually failing on Unix and ESP8266. | |
| import micropython | |
| import sys | |
| class SomeException(Exception): | |
| pass |
Extract audio from mp4
avconv -i input.mp4 -vn -acodec pcm_s16le -ar 48000 -ac 2 stream.wav
Replace audio in mp4
avconv -i input.mp4 -i stream.wav -map 0:0 -map 1:0 -vcodec copy -acodec libfdk_aac -b:a 192k -shortest output.mp4
| import os.path as op | |
| import re | |
| def read_requirements(filename): | |
| """ | |
| Reads requirements.txt file and returns list of str. | |
| Comments and blank lines are ignored. | |
| "-r" references are respected. |
| class CustomFormatter(logging.Formatter): | |
| """Custom logging formatter to write only WARNING, ERROR, CRITICAL.""" | |
| def format(self, record): | |
| if record.levelno >= logging.WARNING: | |
| record.msg = '{} {}'.format(record.levelname, record.msg) | |
| return super(CustomFormatter, self).format(record) |
| import argparse | |
| import sys | |
| import xml.sax | |
| from xml.sax.saxutils import XMLGenerator | |
| class XMLFilter(XMLGenerator): | |
| def __init__(self, output_stream, elements_to_ignore): | |
| XMLGenerator.__init__(self, output_stream, encoding='utf-8') |