Here is the code:
---[cut]-----------------------------
DEBUG = []
FONT_NAMES = []
def names():
if len(DEBUG):
print(len(DEBUG))
if len(FONT_NAMES):
print(len(FONT_NAMES))
if len(FONT_NAMES)==0:
FONT_NAMES = "query()"
names()
---[cut]-----------------------------
Here is the output:
Traceback (most recent call last):
File "globalocal.py", line 13, in <module>
names()
File "globalocal.py", line 8, in names
if len(FONT_NAMES):
UnboundLocalError: local variable 'FONT_NAMES' referenced before assignment
As you may see there is inconsistency between handling of line 6 -
"if len(DEBUG):" and line 8 - "if len(FONT_NAMES):". This is very magical
and hard to troubleshoot. I wonder if this message can be improved with a
pointer to the concept on when global variables become local?
--
anatoly t.
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