code.InteractiveConsole interprets escape characters 
incorrectly. For example, it interprets "\\t" the same 
as "\t", so it prints a tab instead of a backslash t.

to reproduce:

import sys
import code

class MyConsole(code.InteractiveConsole):
    def __init__(self):
        code.InteractiveConsole.__init__(self)

    # I tried it with runsource too. Same result.
    def run_code(self, cmdString):
        self.runcode(cmdString)

    def write(self, data):
        sys.__stdout__.write(data)

instance = MyConsole()
instance.run_code('print "\\thello\\tworld"')
print "\\thello\\tworld"

Logged In: YES 
user_id=887415

   You should use the r prefix when passing strings to 
InteractiveConsole to prevent the string from beeing parsed 
twice. This works fine:




>>> instance.run_code(r'print "\\thello\\tworld"')




   The strange behaviour you are experiencing lies with the 
exec statement... it boiles down to:




>>> exec 'print"\\thello\\tworld"'


	hello	world


>>> print "\\thello\\tworld"


\thello\tworld




   The cause is that the inner string in the first call is parsed 
twice... first double backslash '\\' is reduced to '\' prior to the 
exec statement is executed... then before print is called the 
string is parsed again and '\t' becomes a tab. I wouldn't 
classify this as a bug, rather a gotcha. Think of what this line 
means:




>>> exec 'print "hello\nworld"'




...johahn

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user_id=6656

as johahn explains, you've been confused by multiple levels
of escaping.  closing.

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user_id=889309

Thanks for the clarification on this one.