def example_1():
print "example_1"
print "Calling signature:"
print "split(f, in_stream, num_out_streams, state=None, call_streams=None)"
print "Returns a list of num_out_streams streams."
print "List function: f(lst) where lst is a list. "
print "f() returns a list of num_out_streams lists."
print "in_stream is a single stream. \n"
print "In this example, split() returns two streams: multiples and nonmultiples of factor."
print "x is the input stream."
factor = 2
print "factor = ", factor
def f(lst):
return [filter(lambda n: n%factor == 0, lst), \
filter(lambda n: n%factor != 0, lst)]
x = Stream('x')
list_of_two_streams =split(f, x, 2)
multiples, nonmultiples = list_of_two_streams
multiples.set_name('multiples')
nonmultiples.set_name('nonmultiples')
x.extend([5, 11])
print ""
print "FIRST STEP"
print_streams_recent([x, multiples, nonmultiples])
print""
x.extend([9, 15, 19, 8, 20])
print "SECOND STEP"
print_streams_recent([x, multiples, nonmultiples])
def example_1():
print "example_1"
print "Calling signature:"
print "split(f, in_stream, num_out_streams, state, call_streams=None)"
print "Returns a list of num_out_streams streams."
print "List function: f(lst, state) where lst is a list. "
print "f() returns a list of num_out_streams lists and state"
print "in_stream is a single stream. \n"
print "THIS EXAMPLE"
print "The input stream is x and the output streams are a and b."
print "The input stream is fed to one of the output streams until"
print "the next even number (multiple of factor=2); at that point"
print "the stream is fed to the other output stream."
print "This function switches x between a and b where the switch is triggered"
print "by an event: namely the appearance of an even value."
print ""
factor = 2
def f(lst, state):
a = []
b = []
for j in range(len(lst)):
if (lst[j]+state) % factor == 0:
state = 1
a.append(lst[j])
else:
state = 0
b.append(lst[j])
return ([a,b], state)
x = Stream('x')
a, b =split(f, in_stream=x, num_out_streams=2, state=0)
a.set_name('a')
b.set_name('b')
x.extend([4, 5, 10, 11, 13, 16, 9])
print "FIRST STEP"
print_streams_recent([x, a, b])
print""
x.extend([15, 19, 8, 7, 20, 21])
print "SECOND STEP"
print_streams_recent([x, a, b])
def example_1():
print "example_1"
print "Calling signature:"
print "split(f, in_stream, num_out_streams, state=None, call_streams=None)"
print "Returns a list of num_out_streams streams."
print "List function: f(lst) where lst is a list. "
print "f() returns a list of num_out_streams lists."
print "in_stream is a single stream. \n"
print "In this example, split() returns two streams: multiples and nonmultiples of factor."
print "x is the input stream."
factor = 2
print "factor = ", factor
def f(lst):
return [filter(lambda n: n%factor == 0, lst), \
filter(lambda n: n%factor != 0, lst)]
x = Stream('x')
#list_of_two_streams =split(f, x, 2)
list_of_two_streams = split(f, x)
multiples, nonmultiples = list_of_two_streams
multiples.set_name('multiples')
nonmultiples.set_name('nonmultiples')
x.extend([5, 11])
print ""
print "FIRST STEP"
print_streams_recent([x, multiples, nonmultiples])
print ""
x.extend([9, 15, 19, 8, 20])
print "SECOND STEP"
print_streams_recent([x, multiples, nonmultiples])
