On 12/06/2013 18:13, Νικόλαος Κούρας wrote:
On 12/6/2013 7:40 μμ, MRAB wrote:
On 12/06/2013 12:17, Νικόλαος Κούρας wrote:
As with most of your problems you are barking up the wrong tree.
Why not use the actual value you get from the form to check whether you
have a valid month?
Do you understand why "0" is submitted instead of "=========="?
Bye, Andreas
I have corrected the enumerate loop but it seems thet now the year works
and the selected name nad month fail:
if '=' not in ( name and month and year ):
cur.execute( '''SELECT * FROM works WHERE clientsID =
(SELECT id FROM
clients WHERE name = %s) and MONTH(lastvisit) = %s and YEAR(lastvisit) =
%s ORDER BY lastvisit ASC''', (name, month, year) )
elif '=' not in ( month and year ):
cur.execute( '''SELECT * FROM works WHERE MONTH(lastvisit)
= %s and
YEAR(lastvisit) = %s ORDER BY lastvisit ASC''', (month, year) )
elif '=' not in year:
cur.execute( '''SELECT * FROM works WHERE YEAR(lastvisit)
= %s ORDER
BY lastvisit ASC''', year )
else:
print( '<h2><font color=red>Πώς να γίνει αναζήτηση αφού
δεν επέλεξες
ούτε πελάτη ούτε μήνα ή τουλάχιστον το έτος?' )
print( '<meta http-equiv="REFRESH"
content="5;/cgi-bin/pelatologio.py">' )
sys.exit(0)
i tried in , not in and all possible combinations. but somehow it
confuses me.
doesn't that mean?
if '=' not in ( name and month and year ):
if '=' does not exists as a char inside the name and month and year
variables?
i think it does, but why it fails then?
You think it does, but you're wrong.
How would you telll in english word what this is doing?
if '=' not in ( name and month and year ):
In English, the result of:
x and y
is basically:
if bool(x) is false then the result is x, otherwise the result is y
For example:
>>> bool("")
False
>>> "" and "world"
''
>>> bool("Hello")
True
>>> "Hello" and "world"
'world'
and then what this is doing?
if '=' not in ( name or month or year ):
In English, the result of:
x or y
is basically:
if bool(x) is true then the result is x, otherwise the result is y
For example:
>>> bool("")
False
>>> "" or "world"
'world'
>>> bool("Hello")
True
>>> "Hello" or "world"
'Hello'
These can be strung together, so that:
x and y and z
is equivalent to:
(x and y) and z
and:
x or y or z
is equivalent to:
(x or y) or z
and so on, however many times you wish to do it.
Never before i used not in with soe many variables in parenthesi, up
until now i was specified it as not in var 1 and not in var 2 and not in
var 2 and so on....
Keep it simple:
if '=' not in name and '=' not in month and '=' not in year:
There may be a shorter way, but you seem confused enough as it is.
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