I naively thought I could capture output from exec()'ed print
invocations by (somehow) overriding 'print' globally. But this
seems not to be possible. Or at least not easy:
c:\d>test.py
Python 2.6.2 (r262:71605, Apr 14 2009, 22:40:02) [MSC v.1500 32 bit
(Intel)] win32
Type "help", "copyright", "credits" or "license" for more info.
>>> print("Hello?")
Hello?
>>>
My custom print function isn't being called (see code below),
I guess because its only being overridden in the current module?
Is there some way to make InteractiveInterpreter/exec use my print
function, or is this simply not possible?
----------
### File test.py ###
from __future__ import print_function
import sys
from code import InteractiveInterpreter
from contextlib import contextmanager
def printhook(*args):
sys.stdout.write("printhook(): {0}\n".format(repr(args[0])))
@contextmanager
def global_printhook(printhook):
global print
print = printhook
yield
print = __builtins__.print
py = InteractiveInterpreter()
if not hasattr(sys, "ps1"): sys.ps1 = ">>> "
if not hasattr(sys, "ps2"): sys.ps2 = "... "
banner = ("Python %s\n%s\n" % (sys.version, sys.platform) +
'Type "help", "copyright", "credits" or "license" '
'for more info.\n')
sys.stdout.write(banner)
sys.stdout.write(sys.ps1)
while True:
try:
with global_printhook(printhook):
result = py.runsource(raw_input())
if result is None:
sys.stdout.write(sys.ps2)
elif result is True:
py.runcode(result)
except EOFError:
break
else:
sys.stdout.write(sys.ps1)
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