用重定向stdout/stderr的包装器重写push()方法
在转发到基服务器之前
(more,result)其中“more”表示InteractiveConsole是否
更多的投入,“结果”是什么交互式控制台.push()写信给
你的StringIO实例。
import sys
from cStringIO import StringIO
from code import InteractiveConsole
from contextlib import contextmanager
__all__ = ['Interpreter']
@contextmanager
def std_redirector(stdin=sys.stdin, stdout=sys.stdin, stderr=sys.stderr):
"""Temporarily redirect stdin/stdout/stderr"""
tmp_fds = stdin, stdout, stderr
orig_fds = sys.stdin, sys.stdout, sys.stderr
sys.stdin, sys.stdout, sys.stderr = tmp_fds
yield
sys.stdin, sys.stdout, sys.stderr = orig_fds
class Interpreter(InteractiveConsole):
"""Remote-friendly InteractiveConsole subclass
This class behaves just like InteractiveConsole, except that it
returns all output as a string rather than emitting to stdout/stderr
"""
banner = ("Python %s\n%s\n" % (sys.version, sys.platform) +
'Type "help", "copyright", "credits" or "license" '
'for more information.\n')
ps1 = getattr(sys, "ps1", ">>> ")
ps2 = getattr(sys, "ps2", "... ")
def __init__(self, locals=None):
InteractiveConsole.__init__(self, locals=locals)
self.output = StringIO()
self.output = StringIO()
def push(self, command):
"""Return the result of executing `command`
This function temporarily redirects stdout/stderr and then simply
forwards to the base class's push() method. It returns a 2-tuple
(more, result) where `more` is a boolean indicating whether the
interpreter expects more input [similar to the base class push()], and
`result` is the captured output (if any) from running `command`.
"""
self.output.reset()
self.output.truncate()
with std_redirector(stdout=self.output, stderr=self.output):
try:
more = InteractiveConsole.push(self, command)
result = self.output.getvalue()
except (SyntaxError, OverflowError):
pass
return more, result
查看这个完整的示例,它接受来自UDP套接字的输入:
你看到了什么客户端.py应该和python的没有区别
常规交互式解释器,即使所有命令
往返于服务器.py进行评估。
应该能够适应你的情况,只要你相信
输入源。当有人键入以下内容时,事情变得“有趣”:
while True: continue
但这完全是另一个问题。。。:-)
