[Python-Dev] locals() different behaviour when tracing? (original) (raw)
Anders Waldenborg anders at 0x63.nu
Thu Oct 8 15:43:44 CEST 2009
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Is it intentional that locals() returns a copy/snapshot of the local variables sometimes, and sometimes a reference? Like when enabling tracing, such as in the code pasted below. The documentation ("Update and return a dictionary containing the current scope's local variables.") is pretty unclear.
import sys
def X(): l = locals() i = "foo" print "Is 'i' in stored locals()? ", ('i' in l)
print "Running normally" X()
print "Enabling tracing" def t(*a): return t sys.settrace(t) X()
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