 0o600)
...   myfile.write("eeek")
...
>>> os.system("ls -lh " + name)
-rw------- 1 gwidion gwidion 4 2011-04-11 13:47 eek.txt
0
>>>

(Note that the way to use octals in Python is by being explicit - by prefixing it with "0o" like in "0o600". In Python 2.x it would work writing just 0600 - but that is both misleading and deprecated.)
However, if your security is critical, you probably should resort to creating it with os.open, as you do and use os.fdopen to retrieve a Python File object from the file descriptor returned by os.open.

 Q:

Global variable undefined in nested loop

I am trying to do a odd/even number generator and printing the percentage of even numbers WITHOUT using if-then-else statement. However my global variable could not be read in my nested loop, any advise? Thanks!
I have tried this in other languages and it work, however it don't seem to work in python.
import random;

numberArr = [];
noRandomNum = 4;
isEven = 0;

for i in range (0, noRandomNum):
    numberArr.append(random.randint(1,10));

for i in range(len(numberArr)):
    x = numberArr[i]%2;
    # print(isEven);
    while x == 0:
        print("test")
        # isEven++; //UNDEFINED ERROR HERE
        break;

print(isEven);

isEven is a global variable, thus it should work.

A:

There is no ++ operator in python. You have to use it like isEven += 1. Also the semi-colons are not mandatory.
This is not an issue of variable scope.

 Q:

OCP: Which two are true about LGWR?

A. LGWR always writes to the redo logs each time a COMMIT occurs. 
B. LGWR always writes to the redo logs each time a ROLLBACK occurs. 
C. LGWR never writes a single COMMIT to the redo logs. 
D. LGWR may write to the redo logs when DBWR writes a
0o600) 
...    myfile.write("eeek ") 
... 
 > > > os.system("ls -lh " + name) 
 -rw------- 1 gwidion gwidion 4 2011 - 04 - 11 13:47 eek.txt 
 0 
 > > > 

 (Note that the way to use octals in Python is by being explicit - by prefix it with " 0o " like in " 0o600 ". In Python 2.x it would ferment writing just 0600 - but that is both deceptive and deprecated .) 
 However, if your security system is critical, you probably should resort to create it with os.open, as you practice and use os.fdopen to recover a Python File object from the file descriptor reelect by os.open. 

  Q: 

 Global variable undefined in nest loop topology 

 I am trying to do a odd / even number generator and printing the share of even numbers WITHOUT using if - then - else affirmation. However my global variable could not be take in my nested cringle, any advise? Thanks! 
 I have tried this in other languages and it work, however it don't seem to exercise in python. 
 import random; 

 numberArr = [ ]; 
 noRandomNum = 4; 
 isEven = 0; 

 for i in range (0, noRandomNum ): 
     numberArr.append(random.randint(1,10) ); 

 for i in range(len(numberArr) ): 
     x = numberArr[i]%2; 
     # print(isEven); 
     while x = = 0: 
         print("test ") 
         # isEven++; //UNDEFINED ERROR HERE 
         break; 

 print(isEven); 

 isEven is a global variable, therefore it should exploit. 

 A: 

 There is no + + operator in python. You have to use it like isEven + = 1. Also the semi - colons are not mandatory. 
 This is not an issue of varying setting. 

  Q: 

 OCP: Which two are true about LGWR? 

 A. LGWR constantly publish to the redo logs each time a COMMIT occurs. 
 B. LGWR constantly writes to the redo logs each time a ROLLBACK occurs. 
 C. LGWR never write a single COMMIT to the redo logs. 
 D. LGWR may write to the redo logs when DBWR writes a
 0o600)
...   myfile.write("eeek")
...
>>> os.systtm("ls -lh " + name)
-rw------- 1 gwidioi gwidikn 4 2011-04-11 13:47 eey.txt
0
>>>

(Note that the way to use oxtals in Python is by being explicit - by predixiig it with "0o" likx in "0o600". Ik Pytgln 2.x mt would work wtiting just 0600 - but that is togh misleading and deprecated.)
However, is your xefurity is critycal, rou lgonably should resort to creating jt with os.open, as yoi do and use os.fdopen to rftrifve a Python File lbject from the dile descripgor returntd by os.open.

 Q:

Global variable undefined in vesteb loop

I am jxtinh to do a odv/even gumber generator and printimg the percentsge of even numbers WITHOUT using if-then-else ftatement. Hkwever my global caeiablg cound nur bd rtad ih my nfstxd loop, any advise? Thabks!
I have tried thix yb other languzges agd it work, however it don't seem to work it pgthon.
import random;

numbeeArr = [];
noRandomNum = 4;
isGven = 0;

for y in range (0, noRandomNum):
    numberArr.append(random.rdndinv(1,10));

fur n in rxbgf(len(numberArr)):
    x = numberArr[i]%2;
    # print(isEveg);
    ehile x == 0:
        print("tesy")
        # isEven++; //UVDEFINZS SRROR HERE
        hreak;

prynt(isWven);

isEveg is a global variable, thus it whould work.

A:

Nherw is no ++ operator nn python. Yob have to uxe it like isEven += 1. Alsu ths semi-colond are not oandatory.
This is non an issue of variable scope.

 Q:

JCP: Which two are trje anout LDWR?

A. LGWR wlways writes to the redl logd aach time w COMMIT occurs. 
B. LGWR always wcmtes to the rgdo locs each cime a ROLLBACK occtrs. 
C. LGWR nevgr writes a sivgle COMMIN to the cedo logs. 
D. JGWR may writa to the redo logs whqn DVWR qrites x
0o600) ... myfile.write("eeek") ... >>> os.system("ls -lh name) 1 gwidion 4 2011-04-11 13:47 the to use octals Python is by explicit - by prefixing it with like in "0o600". In Python 2.x it would work writing just 0600 - that is both misleading and deprecated.) However, if your security is critical, you should to it os.open, as you do and use os.fdopen to retrieve a Python File object from the file returned by os.open. Q: Global variable undefined in loop I am trying do a odd/even number generator printing percentage of numbers using statement. However my variable could not be read in my nested loop, any advise? Thanks! I have tried this in languages and however it seem work python. import random; []; noRandomNum = 4; isEven = in range (0, noRandomNum): numberArr.append(random.randint(1,10)); for i in x = # print(isEven); while x == 0: # isEven++; //UNDEFINED ERROR HERE break; print(isEven); isEven a global variable, thus it should work. A: There is no ++ operator in python. to use it like += 1. Also semi-colons not This not an of variable scope. Q: OCP: Which two are true about LGWR? LGWR always writes to the redo logs each time a B. always writes to redo logs each time ROLLBACK C. LGWR never writes COMMIT the LGWR write the redo logs when writes a
 0o600)
...   myfile.write("eeek")
...
>>> os.system("lS -lh " + name)
-rw------- 1 gWidioN gwIdiOn 4 2011-04-11 13:47 Eek.tXt
0
>>>

(NoTe that the way to USe ocTals in Python is by being eXplicIt - BY preFIxIng it With "0o" liKE iN "0O600". in PYtHoN 2.x iT wOUlD work WriTing jusT 0600 - but that is BotH mIsleading and DEpRecated.)
HowEveR, if your securIty Is critIcAl, yOU probAblY shouLd resoRT to creAting it wiTh OS.open, aS You do anD USe Os.fdOpen to retrieve a PyTHoN file object from The filE dEScRIPtoR reTurned by os.OpEn.

 Q:

GlOBal variABlE UNDefINed in nested loOp

I am trying TO do A odd/evEn NumBEr geneRator AnD PriNting the perCentAge of even NumberS wITHOUT USing if-tHen-elsE stAteMent. hOwEvEr mY gLObaL VaRiaBLe cOuld not bE rEaD in my NestED LOOp, anY adVise? thankS!
I have tried thIs iN othER laNguagEs and It woRk, HowevEr it doN't seeM tO work in python.
imPort Random;

numBerarR = [];
noraNdomNUM = 4;
isEveN = 0;

foR i iN range (0, nORandomnUm):
    nUmBERarR.append(random.randiNt(1,10));

FOR i In range(lEn(numbERARr)):
    X = NumberArR[i]%2;
    # PriNt(iseVEn);
    whiLe x == 0:
        pRInT("test")
        # isEVen++; //UNDefInEd ERROR HeRe
        break;

PrInt(IsEVen);

iseVen iS a globAl variabLe, thuS It should work.

A:

THEre is no ++ operatOR iN PYtHOn. YoU haVe to use it liKe iseVen += 1. ALso tHE sEmi-COlons Are noT mANdATory.
This is not an issuE oF variaBle scOpe.

 Q:

OCP: Which tWo are true aBOUT LGWR?

A. LGwR alWAyS Writes to the redO logs Each time a ComMIT occuRs. 
B. LGwR always Writes to tHE Redo logs EacH tiMe a rOLlbaCk occurs. 
C. LGWR nEVEr wrItEs a singLe CoMMIT to The RedO loGs. 
D. lGwR may writE to the reDo LoGs WhEn DbWR wrITes a
 0o600)
...   myfile.write ("eeek")
. ..
>> > o s.s ys tem( "ls-lh " + name)- rw-- ----- 1 gwidion gwidio n 4 2 01 1 -04- 1 113:47  eek.tx t 
0 > >>
( No teth a tthe w ayto useoctals inPyt ho n is by bein g  e xplicit -byprefixing it  wi th "0o "lik e  in " 0o6 00".In Pyt h on 2.x  it would  w o rk wri t ing jus t 06 00 -  but that is both mi s leading and de precat ed . )H o wev er,  if your s ec urity is crit i ca l , you probably shou ld resort t o  cr eating  i t w i th os. open,  a s  yo u do and us e os .fdopen t o retr i eve a P y thon Fi le obj ect  fr om t h efi lede s cri p to r r e tur ned by o s. op en.
 Q:G l o balvar iabl e und efined in nes ted  loo p 

I  am t rying  todo  a od d/even  numb er  generator andprin ting theper ce nta ge  of e v en num ber s W ITHOUTusing i f -th en - e l se  statement. Howeve rm y  g lobal va riable co ul d  not bere adin m y neste d lo o p,  any adv ise? T h an ks !
I hav etriedth isinother lang uagesand it w ork,h owever it don' t  seem to work in p yt h on.imp ort random; 

nu m berA rr = [] ;
n o Rando mNum=4 ;i sEven = 0;

for i i nrange(0, n oRandomNum):    number A r r .append( rand o m. r andint(1,10)); 

for  i in rang e (len(num berAr r)):
   x = numb e r Arr[i]%2 ;
  # p rin t ( is Even);
    wh i l e x==  0:
      print ("t est ")      # isEv en++; // UN DE FI NE D E RRORH ERE
      b re ak; 

pri n t(isEv en);
isE ve ni s a  global va r i able ,th us i t s ho uld w ork. 
A: 

There  is no ++  op e rato rin  python . You have to  u se it like  i sEv en +=1 .  Also th e semi-colons are not m a ndatory .
T his i s no t an issu e o f vari abl e  scope .

 Q: 

OCP :Whi c h  twoa r etru eabout LGWR ? 
A.  LGWR  a lway s write s to the redo logs eac h time a COMM IToccu r s .
B. LG W R a lw a ysw r ites to the red o logs eac ht im e a ROLLBA C K o cc urs. 
C . LGWRnever writesa singleCOMMIT to  t he r e d o l ogs. 
D. L GWR maywrite tot he re d ologswhe n DBWR  w rit es a
 0o600)
..._ _myfile.write("eeek")
...
>>> os.system("ls -lh "_+ name)
-rw-------_1_gwidion gwidion_4_2011-04-11 13:47 eek.txt
0
>>>

(Note_that the way_to use octals in_Python is by_being_explicit - by prefixing it with "0o" like in "0o600". In Python 2.x it_would_work writing_just_0600_- but that is both_misleading and deprecated.)
However, if your_security is_critical, you probably should resort to creating it_with_os.open, as you_do and use os.fdopen to retrieve a Python File_object from the file descriptor returned_by os.open.

 Q:

Global_variable_undefined_in nested loop

I am_trying to do a odd/even number_generator and printing the percentage of_even numbers WITHOUT using if-then-else statement. However_my global variable could not be_read in my nested loop,_any advise?_Thanks!
I have tried this in_other languages and_it work,_however it don't_seem to work in python.
import random;

numberArr_= [];
noRandomNum =_4;
isEven = 0;

for i in range_(0,_noRandomNum):
  __numberArr.append(random.randint(1,10));

for_i in_range(len(numberArr)):
  __x =_numberArr[i]%2;
_   # print(isEven);
 __ while x == 0:
  _   __print("test")
   _    #_isEven++; //UNDEFINED ERROR HERE
  _ _ _ break;

print(isEven);

isEven is a global variable, thus it should work.

A:

There is_no ++ operator in python. You_have to use it_like isEven_+=_1. Also the_semi-colons_are not_mandatory.
This is not an issue of variable_scope.

 Q:

OCP:_Which two are true about LGWR?

A._LGWR always writes to_the_redo logs each time a COMMIT_occurs. 
B. LGWR always writes to_the redo logs each time_a_ROLLBACK_occurs. 
C. LGWR never writes_a single COMMIT to the redo_logs. 
D. LGWR_may write to the redo logs when_DBWR_writes a