greenlet

greenlet_first.py

from greenlet import greenlet

print "\n\nSwitching between greenlets"


def test1():
    print "In test 1 - a"
    gr3.switch()
    print "In test 1 - b"
    gr2.switch()


def test2():
    print "In test 2 - a"
    gr3.switch()
    print "In test 2 - b"


def test3():
    print "In test 3 - a"
    g_self = greenlet.getcurrent()
    g_self.parent.switch()
    print "In test 3 - b"
    gr2.switch()

gr1 = greenlet(test1)
gr2 = greenlet(test2)
gr3 = greenlet(test3)

gr1.switch()
print "In parent 1"
gr1.switch()
print "In parent 2"


######################################
print "\n\nPassing values between greenlets"


def test_1(x, y):
    z = gr_2.switch(x+y)
    print z


def test_2(u):
    print u
    gr_1.switch(42)

gr_1 = greenlet(test_1)
gr_2 = greenlet(test_2)
gr_1.switch("hello", " world")