traceback-example.html

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<H2>
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3.9.1 Traceback Example 
</H2>

<P>
This simple example implements a basic read-eval-print loop, similar
to (but less useful than) the standard Python interactive interpreter
loop.  For a more complete implementation of the interpreter loop,
refer to the <tt class='module'><a href="module-code.html" tppabs="http://www.python.org/doc/current/lib/module-code.html">code</a></tt> module.

<P>
<dl><dd><pre class="verbatim">
import sys, traceback

def run_user_code(envdir):
    source = raw_input("&gt;&gt;&gt; ")
    try:
        exec source in envdir
    except:
        print "Exception in user code:"
        print '-'*60
        traceback.print_exc(file=sys.stdout)
        print '-'*60

envdir = {}
while 1:
    run_user_code(envdir)
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