On 8/11/10 11:07 AM, fuglyducky wrote:
I am a complete newbie to Python (and programming in general) and I
have no idea what I'm missing. Below is a script that I am trying to
work with and I cannot get it to work. When I call the final print
function, nothing prints. However, if I print within the individual
functions, I get the appropriate printout.
Am I missing something??? Thanks in advance!!!!
################################################
# Global variable
sample_string = ""
def gen_header(sample_string):
HEADER = """
mymultilinestringhere
"""
sample_string += HEADER
return sample_string
By default, all assignments inside of a function are local to the function. Even
augmented assignments like +=. Python strings are immutable, so
sample_string += HEADER
works exactly like
sample_string = sample_string + HEADER
The string referred to by the global name sample_string is never modified and
the global name is never reassigned.
http://docs.python.org/py3k/tutorial/classes.html#python-scopes-and-namespaces
gen_header(sample_string)
gen_nia(sample_string)
print(sample_string)
You probably want something like the following:
sample_string = gen_header(sample_string)
sample_string = gen_nia(sample_string)
print(sample_string)
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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