common module

Functions

def beep(a, b)

make a sound ref: http://stackoverflow.com/questions/16573051/python-sound-alarm-when-code-finishes you need install apt-get install sox

:param a: frenquency :param b: duration

create a background thread,so this function does not block the main program

def humanize_bytes(n, precision=1)

based on Author: Doug Latornell's work

# Licence: MIT
# URL: <http://code.activestate.com/recipes/577081/>

Return a humanized string representation of a number of bytes.

>>> humanize_bytes(1)
'1 B'
>>> humanize_bytes(1024)
'1.0 KiB'
>>> humanize_bytes(1024 * 123)
'123.0 KiB'
>>> humanize_bytes(1024 * 12342)
'12.1 MiB'
>>> humanize_bytes(1024 * 12342, 2)
'12.05 MiB'
>>> humanize_bytes(1024 * 1234, 2)
'1.21 MiB'
>>> humanize_bytes(1024 * 1234 * 1111, 2)
'1.31 GiB'
>>> humanize_bytes(1024 * 1234 * 1111 * 1024)
'1.3 TiB'
>>>

def str2num(val)

str to int or float or raise a Exception. in some case maybe you just want to do some number type transform.

def str2pyobj(val)

basestring to python obj or not changed :param val: :return: