exception - Why doesn't my Python script work? -

this function raises exception no matter change:

def some_func(name=none):     if name isn't none:         print(name) 

then try run it:

some_func('tom') 

it raises exception:

sorry, there error in processing form action "some_func". please report error or try again later. (error calling soap method: error deserializing message: can't locate shiprequest/fedex/soap/elements /fuelsurchargepercent.pm in @inc  (@inc contains: /usr/lib/interchange      /var/lib/transactions/lib2     /usr     /lib/interchange/lib     /usr/local/lib/perl5/5.8.8/i686-linux     /usr/local/lib/perl5/5.8.8     /usr/local/lib     /perl5/site_perl/5.8.8/i686-linux     /usr/local/lib/perl5/site_perl/5.8.8     /usr/local/lib/perl5/site_perl  .) @ (eval 3213) line 3.  @ line 2 @ /usr/local/lib/perl5/site_perl/5.8.8/soap/wsdl/expat/base.pm line 18 . [scalac] compiling 3 scala , 196 java source files /home/alain/documents/project/build/model/src [scalac] error: error while loading error, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/error/error.class) [scalac] error: error while loading binder, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/attachment/binder.class) [scalac] error: error while loading journal, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/note/journal.class) [scalac] error: error while loading exemption, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/exemption/exemption.class) [scalac] error: error while loading flag, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/flag/flag.class)   <error-page>     <error-code>500</error-code>     <location>/web-inf/pages/500.jsp</location>   </error-page> [scalac] error: error while loading configurationgroup, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/configuration/configurationgroup.class) [scalac] error: error while loading issueconfiguration, missing dependency 'class javax.jdo.spi.persistencecapable$objectidfieldsupplier', required /home/alain/documents/project/model/dist/model.jar(model/analysis/configuration/issueconfiguration.class) [scalac] 7 errors found 1>gameengine.obj : error lnk2001: unresolved external symbol "public: static double weaponsdb::pi" (?pi@weaponsdb@@2na) 1>component.obj : error lnk2001: unresolved external symbol "public: static double weaponsdb::pi" (?pi@weaponsdb@@2na) 1>coordinate.obj : error lnk2019: unresolved external symbol "public: static double weaponsdb::pi" (?pi@weaponsdb@@2na) referenced in function "public: double __thiscall coordinate::distancefrom(class coordinate *)" (?distancefrom@coordinate@@qaenpav1@@z) 1>driver.obj : error lnk2001: unresolved external symbol "public: static double weaponsdb::pi" (?pi@weaponsdb@@2na) 1>environment.obj : error lnk2001: unresolved external symbol "public: static double weaponsdb::pi" (?pi@weaponsdb@@2na) 1>environment.obj : error lnk2001: unresolved external symbol "public: static bool environment::spyflag" (?spyflag@environment@@2_na) 1>environment.obj : error lnk2001: unresolved external symbol "private: static class environment * environment::instance_" (?instance_@environment@@0pav1@a) 1>environment.obj : error lnk2019: unresolved external symbol "public: static void __cdecl environment::spyalertover(void)" (?spyalertover@environment@@saxxz) referenced in function "public: void __thiscall environment::notificationofspysuccess(void)" (?notificationofspysuccess@environment@@qaexxz) 1>gamedriver.obj : error lnk2019: unresolved external symbol "public: static void __cdecl mainmenu::gameover(int)" (?gameover@mainmenu@@saxh@z) referenced in function "public: static void __cdecl gamedriver::run(void)" (?run@gamedriver@@saxxz) 1>gamedriver.obj : error lnk2019: unresolved external symbol "public: static void __cdecl gamedriver::gatherinput(void)" (?gatherinput@gamedriver@@saxxz) referenced in function "public: static void __cdecl gamedriver::run(void)" (?run@gamedriver@@saxxz) 1>gamedriver.obj : error lnk2019: unresolved external symbol "public: static void __cdecl gamedriver::ticker(void)" (?ticker@gamedriver@@saxxz) referenced in function "public: static void __cdecl gamedriver::run(void)" (?run@gamedriver@@saxxz) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static int gamedriver::ticks" (?ticks@gamedriver@@2ha) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::evaluatinginputflag" (?evaluatinginputflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keyquitflag" (?keyquitflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keytoggleweaponrightflag" (?keytoggleweaponrightflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keytoggleweaponleftflag" (?keytoggleweaponleftflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keyfireflag" (?keyfireflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keyleftflag" (?keyleftflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keyrightflag" (?keyrightflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keyupflag" (?keyupflag@gamedriver@@2_na) 1>gamedriver.obj : error lnk2001: unresolved external symbol "public: static bool gamedriver::keydownflag" (?keydownflag@gamedriver@@2_na) 1>gui_env.obj : error lnk2001: unresolved external symbol "private: static struct bitmap * gui_env::buffer" (?buffer@gui_env@@0paubitmap@@a) 1>gui_info.obj : error lnk2001: unresolved external symbol "private: static struct bitmap * gui_info::buffer" (?buffer@gui_info@@0paubitmap@@a) 1>menudriver.obj : error lnk2019: unresolved external symbol "public: static void __cdecl mainmenu::displaymenu(void)" (?displaymenu@mainmenu@@saxxz) referenced in function "public: static void __cdecl menudriver::start(void)" (?start@menudriver@@saxxz) 1>spaceobjectfactory.obj : error lnk2001: unresolved external symbol "private: static class spaceobjectfactory * spaceobjectfactory::_instance" (?_instance@spaceobjectfactory@@0pav1@a) 1>spy.obj : error lnk2019: unresolved external symbol "public: virtual bool __thiscall unformationable::sametypeofspaceobjectas(class spaceobject *)" (?sametypeofspaceobjectas@unformationable@@uae_npavspaceobject@@@z) referenced in function "public: virtual bool __thiscall spy::sametypeofspaceobjectas(class spaceobject *)" (?sametypeofspaceobjectas@spy@@uae_npavspaceobject@@@z) 1>weaponsdb.obj : error lnk2001: unresolved external symbol "private: static class weaponsdb * weaponsdb::_instance" (?_instance@weaponsdb@@0pav1@a) 1>c:\users\owner\desktop\bosconian\code\bosconian\debug\bosconian.exe : fatal error lnk1120: 23 unresolved externals 

use

is not none 

instead of

isn't none