Sf Tools for Python3 Development
A project that include my own (SF-Zhou) tools for Python3 development.
I hope it is useful for you, too. :D
install
pip3 install sttools
- singleton decorator
- dynamic code runner
- complex partial function decorator
- serialize to & deserialize from ascii string
- code running time measure
- quicker foreach operator
singleton
import st
@st.singleton
class A:
pass
assert A() == A()runner
import st
a, b = 1, 2
ret = st.run('c = a + b', key='c', a=a, b=b)
assert ret == 1 + 2partial function
import st
h = st.partial_back(int, 16)
a = h('A')
assert a == 10
func = st.partial_front(int, '11')
assert func(2) == 3
assert func(10) == 11
assert func(16) == 17serialize & deserialize
>>> import st
>>> st.serialize([1, 2, 3])
'80035d7100284b014b024b03652e'
>>> st.deserialize('80035d7100284b014b024b03652e')
[1, 2, 3]time point measure
import st
import time
st.set_time_point('start')
time.sleep(0.1)
assert 100 <= st.microsecond_from('start') <= 110foreach
import st
objects = ['1', '2', '3']
assert st.foreach(int, objects) == [1, 2, 3]The foreach operator can get the attribute of objects more quickly. It also can run the objects function with specific arguments.
import st
class A:
def __init__(self, v):
self.v = v
def plus(self, p):
return self.v + p
objects = [A(0), A(1), A(2)]
assert st.foreach('.v', objects) == [0, 1, 2] # obj.v
assert st.foreach('#plus', objects, 1) == [1, 2, 3] # obj.plus(1)chain
chain(a, b, c)(*args, **kwargs) = a(b(c(*args, **kwargs))). In other word, it connect several function to a chain func.
import st
int_str_to_hex_str = st.chain(hex, int)
assert int_str_to_hex_str('0') == '0x0'
assert int_str_to_hex_str('1') == '0x1'
assert int_str_to_hex_str('10') == '0xa'
assert int_str_to_hex_str('16') == '0x10'
assert int_str_to_hex_str.__name__ == 'chain<hex, int>'
