UnboundLocalError

[AmeL]

I am stuck at the a small code as the following:

This is module main, the main entry of the application :

from irc_log_mod import *
from irc_chatter_mod import *
from inspect import *
from irc_global_mod import *

def main():
    try:
            curFrame = currentframe()
            writeLog(LOG,
                     curFrame.f_code.co_filename,
                     "",
                     "main()",
                     curFrame.f_lineno,
                     DBG_LEVEL_ONE,
                     "FUNCTION ENTRY")
    finally:
            del curFrame

    # problem comes in this line
    chatter = cchatter("nickname", "username", "fullname", 1)

    # ... rest of the code .....

The class cchatter is coded in a module called irc_chatter_mod ; and its constructor looks like this :

def __init__(self, nickname, username, fullname, flag):
                
        # cchatter::__init__ : BEGIN
        
                # FUNCTION ENTRY
                
                try:
                        curFrame = currentframe()
                        writeLog(LOG,
                                 curFrame.f_code.co_filename,
                                 "cchatter",
                                 "__init__",
                                 curFrame.f_lineno,
                                 DBG_LEVEL_THREE,
                                 "FUNCTION ENTRY")
                finally:
                        # The problem is here
                        del curFrame
               
              # ...rest of the codes......

Problem :
The compiler outputs :
File "C:\public\proj ects\py\AmeL\ir c_chatter_mod_u nit_test.py", line 41, in <module>
main()
File "C:\public\proj ects\py\AmeL\ir c_chatter_mod_u nit_test.py", line 18, in main
chatter = cchatter("nickn ame", "username", "fullname", 1)
File "C:\public\proj ects\py\AmeL\ir c_chatter_mod.p y", line 55, in __init__
del curFrame
UnboundLocalErr or: local variable 'curFrame' referenced before assignment

From my point of view, this error message should be thrown when a variable is referenced, or used, before it is assigned by any value. I found nothing go wrong with my code.
Could you guys please help me ?

[AmeL]

Oh god
The problem is at last solved, I forgot to import a module named inspect :)