I am not sure what the problem is here, so I don't really know how I
should call the subject for that question. Please offer a better
subject.
The code below is a extrem simplified example of the original one. But
it reproduce the problem very nice. Please focus on the variable
`return_code`.
There is a `list()` of numbers without the number `7` in. The code
check if the number `7` is in and should tell that it is not in. But it
does tell me that `7 is in`. ;)
I think I didn't know some special things about scopes of variables in
Python. This might be a very good problem to learn more about that. But
I don't know on which Python topic I should focus here to find a
solution for my own.
#!/usr/bin/env python3
import sys
def walkOn_ids(ids, handlerFunction, **handlerArgs):
for one_id in ids:
handlerFunction(one_id=one_id, **handlerArgs)
print('after handler-call for id {}\t{}'
.format(one_id, handlerArgs))
def _on_id(one_id, return_code):
if return_code is False:
return
if one_id == 7:
return_code = True
else:
return_code = False
print('one_id: {}\treturn_code: {}'.format(one_id, return_code))
def _isSevenInIt(ids):
return_code = True
walkOn_ids(ids=ids,
handlerFunction=_on_id,
return_code=return_code)
return return_code
ids = [1,2,3,4,5,6,8,9] # NO 7
print(ids)
if _isSevenInIt(ids) is True:
print('7 is in')
else:
print('no 7 in it')
sys.exit()
Of course I could make `return_code` a `global` variable. But that is
not the goal. The goal is to carry this variable inside the
walker-function and bring the result back. In the original code I will
use some more complexe data structures with `**handlerArgs`.
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