Megan Land wrote:
<snip>
I tried what you said. I can call the function by itself (not within the
dictionary). I also printed the help(__name__). All of my functions were
listed. Here's a more representative example of my code (I doing this for
work so I don't want to give my entire program away):
import os
class Test():
def func(self):
funcDict={".txt":text, ".html":html}
exList=os.listdir("/home/megan/test")
for i in exList:
(filePath, fileName)=os.path.split(i)
(name, extension)=os.path.splitext(fileName)
self.funcDict[extension]()
def text(self):
print "This is a text file"
def html(self):
print "This is an html file"
def main():
newTest=Test()
newTest.func()
if __name__=="__main__":
main()
Traceback (most recent call last):
File "test.py", line 23, in <module>
main()
File "test.py", line 19, in main
newTest.func()
File "test.py", line 4, in func
funcDict={".txt":text, ".html":html}
NameError: global name 'text' is not defined
It worked fine until I put it inside of a class, but I'm not sure what that
would have to do with it. I don't need to have use all that, but now that
everything is setup like that I want to keep it that way. Any help you can
provide will be greatly appreciated.
Megan Land
As you said, it worked fine till you put those two function definitions
inside a class. As I guessed earlier, your use of the word "method" was
a tipoff. Anyway, within the method func(), an unqualified name will be
searched for locally (an attribute of func()), then globally (within the
module, at global scope). It does not search for other methods.
Still, the first question I have to ask is "why are text() and html()
instance methods?" You're not using self anywhere in those methods,
but maybe you are in your actual code.
I have to assume something, so I'll assume you need self for all three
methods. In this case, simply change the line to:
funcDict={".txt":self.text, ".html":self.html}
and it should work fine. You're creating bound methods, which already
know their self-value when they're placed in the funcDict.
If I assume they don't need self, I'd just move them to global scope,
and forget about it. But if you just can't do that, then how about
nested functions? (I had already added the parameter "name" for testing
purposes, so please forgive that change below.)
def func(self):
def text(name):
print "This", name, "is also a text file, nested"
def html(name):
print "This", name, "is also an html file, nested"
funcDict={".txt":self.text, ".html":self.html}
exList=os.listdir(".")
for i in exList:
(filePath, fileName)=os.path.split(i)
(name, extension)=os.path.splitext(fileName)
if extension in funcDict:
funcDict[extension](name)
I believe you could also do something with the @static decorator, but I
haven't played with it, and it doesn't look like you need it anyway.
DaveA
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