On Tue, 7 Jun 2005, Bernard Lebel wrote:
> The real question is, then, is there a way I can print the code of a
> function as a string? Something like....
>
> 'def myFunction: print "hello"'
Hi Bernard,
Ah, ok. You can use 'inspect':
http://www.python.org/doc/lib/inspect-source.html
For example:
######
>>> import heapq
>>> import inspect
>>> print inspect.getsource(heapq.heappop)
def heappop(heap):
"""Pop the smallest item off the heap, maintaining the heap
invariant."""
lastelt = heap.pop() # raises appropriate IndexError if heap is
empty
if heap:
returnitem = heap[0]
heap[0] = lastelt
_siftup(heap, 0)
else:
returnitem = lastelt
return returnitem
######
It doesn't always work: it'll work only if the function is a pure-Python
function that's defined in a file that Python can find, since functions
themselves don't carry their own textual representation around.
Functions do contain the file name as well as their corresponding line
numbers:
######
>>> heapq.__file__
'/usr/lib/python2.3/heapq.pyc'
>>> heapq.heappop.func_code.co_firstlineno
136
######
which is sorta how inspect.getsource() works.
Best of wishes!
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