Go-like features for Python
Project description
Package golang provides Go-like features for Python:
go spawns lightweight thread.
chan and select provide channels with Go semantic.
method allows to define methods separate from class.
gimport allows to import python modules by full path in a Go workspace.
Goroutines and channels
go spawns a thread, or a coroutine if gevent was activated. It is possible to exchange data in between either threads or coroutines via channels. chan creates a new channel with Go semantic - either synchronous or buffered. Use chan.recv, chan.send and chan.close for communication. select can be used to multiplex on several channels. For example:
ch1 = chan() # synchronous channel
ch2 = chan(3) # channel with buffer of size 3
def _():
ch1.send('a')
ch2.send('b')
go(_)
ch1.recv() # will give 'a'
ch2.recv_() # will give ('b', True)
_, _rx = select(
ch1.recv, # 0
ch2.recv_, # 1
(ch2.send, obj2), # 2
default, # 3
)
if _ == 0:
# _rx is what was received from ch1
...
if _ == 1:
# _rx is (rx, ok) of what was received from ch2
...
if _ == 2:
# we know obj2 was sent to ch2
...
if _ == 3:
# default case
...
Methods
Method decorator allows to define methods separate from class.
For example:
@method(MyClass)
def my_method(self, ...):
...
will define MyClass.my_method().
Import
gimport provides way to import python modules by full path in a Go workspace.
For example
lonet = gopath.gimport('lab.nexedi.com/kirr/go123/xnet/lonet')
will import either
lab.nexedi.com/kirr/go123/xnet/lonet.py, or
lab.nexedi.com/kirr/go123/xnet/lonet/__init__.py
located in src/ under $GOPATH.
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